







Un polynome de degré 3 
20101009 

ait pose la question : comment determiner n polynome P de degré 3 verifiant pour tout reel x la relation p(x+1)p(x)=x² Claude Tardif lui répond. 





x+sin(x) 
20200724 

adm pose la question : f(x)=x+sin(x)
to evaluate f(30)
use radians only or degrees Harley Weston lui répond. 





Degrees, minutes and seconds 
20200221 

Jonathan pose la question : If a cone has an angle of 22 degrees, when i place it flat on a surface, the new resulting central angle is now at 68.69123834, but how come when i saw it on my friend it say 68 degree and 40 minutes, what is this minute? Penny Nom lui répond. 





The degree of 2x + 7 
20161017 

Deejay pose la question : How about when the given has no degree and the other has a constant only, For example 2x + 7,
where's the leading term and what is its leading coefficient? Penny Nom lui répond. 





tan15° 
20160411 

JOHN pose la question : find the exact value of tan15° in surd form. Penny Nom lui répond. 





The degree of a polynomial 
20150105 

Nichole pose la question : How do I determine the degree of polynomials? I've searched this on sites but they are
all so confusing! Is there a simple explanation or way to find what the degree is? Some
examples are: 6x^4 10x^2yz^5 and 3m^2n^710m^8. I also have to say that I am
under the impression that this symbol ^ means the number after it is an exponent. Robert Dawson and Harley Weston lui répond. 





How many kilometers to a longitudinal degree? 
20140619 

cherrielyn pose la question : Assuming that earth is a sphere of radius 6380 km,
what is the difference in the latitudes of two cities 270 miles apart
positioned on the same meridian?
Thank you in advanced po! :) Robert Dawson lui répond. 





The zeros of a fourth degree polynomial 
20130123 

Dakota pose la question : My problem has multiple steps and I have done everything but the last one. 8The original problem is f(x)=x^45x^3+7x^2+3x10 and I have to find the zeros of the equation. I used synthetic substitution like my teacher taught us to get the equation of x^33x^2+x+5=0 but now I don't know how to get the zeros of that equation, or solve it. Penny Nom lui répond. 





The derivative of y = sin (30º + x) 
20121107 

Saskia pose la question : derivative of y = sin (30º + x) Harley Weston lui répond. 





A bipartite graph 
20121029 

A student pose la question : Suppose that G be a bipartite graph with maximum degree of k.
Prove that:
1)Exists a Kregular bipartite graph that G be subgraph it(H) Claude Tardif lui répond. 





The degree measure of the central arc of a circle 
20121017 

Crystal pose la question : On a circle with radius of 12 cm is an arc of length 20 cm. What is the degree measure of the central angle used to make this arc? Penny Nom lui répond. 





A tapestry rod on a curved wall 
20120814 

Marlyn pose la question : I have a curved wall with a radius of 6'. I am trying to have a 36" rod made to hang a tapestry and need to figure out the degree measure of the arc.
Can you help me please? Penny Nom lui répond. 





Angle measures 
20120321 

jogiboy pose la question : how can i get the sine theta if the given is 3.14/3 Penny Nom lui répond. 





Construct a 30 degree angle 
20110610 

Ella pose la question : they give you a simple straight line and ask you to construct an angle of 30 degrees at one end of the line using only a ruler and a compass? Penny Nom lui répond. 





The degree measure of an arc in a circle 
20110408 

Deb pose la question : How do I find the degree measure of an arc in a circle with the Length of 14 and the radius of 70? Penny Nom lui répond. 





The rate of change of the area of a parallelogram 
20110405 

Gevork pose la question : Let a parallelogram have sides of 8 and 12 and let vertex angle A be decreasing at a rate of 2degrees per minute. Find the rate of change of the area of the parallelogram when angle A equals 30 degrees. Penny Nom lui répond. 





Identify each polynomial by its degree and number of terms 
20110110 

betty pose la question : Write in standard form and identify each polynomial by its degree and number of terms. How do you do this? Penny Nom lui répond. 





z^5  3z^4 + 2z^3 + z^2  3z + 2 
20101106 

Kumar pose la question : would you please solve this problem, related to complex numbers.
Find all the roots of :
z^5  3z^4 + 2z^3 + z^2  3z + 2 Robert Dawson and Penny Nom lui répond. 





A cylinder is cut at an angle of 20 degrees 
20100125 

sanjay pose la question : If I have a cylinder with 40mm diameter and I will cut it at an angle
20 degrees so what would be the increased radius or dia.??? of the cylinder Penny Nom lui répond. 





Fourth and fifth degree polynomials 
20090820 

Evin pose la question : hello.i am a student . ax^4+bx^3+cx^2+dx+e=0 x=? i want to learn the solution or formula of equations of the fourth and fifth degree...PLEASE Robert Dawson lui répond. 





The sum of the angles of a triangle 
20090518 

mary pose la question : prove that the sum of the three angles inside any triangle always add up to 180 degrees? Harley Weston lui répond. 





How many feet does a shadow move per hour? 
20090402 

Zora pose la question : How many feet does a shadow move per hour? Robert Dawson lui répond. 





A simple digraph 
20090323 

Shabkhal pose la question : Show that the sum of in degrees of all the nodes of a simple digraph is equal to the sum of out degrees of all its nodes and this sum is equal to the number of edges of the graph. Victoria West lui répond. 





limit sinx/x 
20090130 

Jackie pose la question : how to evaluate limit sinx/x as x tends to zero if x is in degrees Stephen La Rocque and Harley Weston lui répond. 





1 foot drop every 25 feet 
20090122 

jerry pose la question : 1 foot drop every 25 feet what is the angle of the degree Penny Nom lui répond. 





Cutting a pipe on a 45 degree angle 
20080912 

Bakshani pose la question : how do you a mark a pipe 5 inch diameter and cut it to form a 45 degree angel Stephen La Rocque lui répond. 





What angle should he turn? 
20071201 

Jasmine pose la question : Bob is traveling due north he then turns left 45 degrees followed by four 20 degree turns to the right
What is his new heading if he needed to turn so his heading was SSW what direction and what angle should he turn? Walter Whiteley lui répond. 





Is there a practical use for radian measure? 
20071026 

Paula pose la question : Is there a practical use for radian measure in any profession? Which professions might us radian as opposed to degree measure? Harley Weston lui répond. 





More on the sixth degree equation 
20070821 

Farzan pose la question : Equation 1 :
(R + (6.67*5.98*10^13/((R^2)*2)))^2  (R^2) = (7.27*(10^5)*R)^2
Equation 2 :
(6.67*5.98*10^13/(R^2*2))^2 + 6.67*5.98*10^13/R = (7.27*10^5*R)^2
As you see if we expand the left part of the first equation and simplify, the
equations become same, but these two equations have different answers in my
math software.The first one has 3 amounts for R, but the second one has 6
amounts. Why are the answers different ? Stephen La Rocque lui répond. 





A sixth degree equation 
20070820 

Farzan pose la question : Dear friends
I need to solve this equation with an understandable method for highschool students :
(6.67*5.98*10^13/(R^2*2))^2 + 6.67*5.98*10^13/R = (7.27*10^5*R)^2
please solve this problem if you have time. Harley Weston lui répond. 





Angle of clock hands 
20070131 

Sophia pose la question : How many degrees are in the aute angle formed by the hands of a clock at 2:20 p.m.? Stephen La Rocque lui répond. 





a _________________ line forms a 90 degree angle with another line 
20060924 

Lisa pose la question : a _________________ line forms a 90 degree angle with another line is this to it
what fills in the blank? first letter is E third letter is R and has 13 letters Stephen La Rocque lui répond. 





The product of polynomials 
20060713 

Lynne pose la question : If you multiply two polynomials, what can you say about the degree of their product? What exponent applies here? Stephen La Rocque lui répond. 





Fahrenheit and Celsius 
20060612 

Doris pose la question : I just know how to do problems with fahrenheit or celcius. Could you show me step by step how to do these? Then I can do it if you can show me each step of the way. Stephen La Rocque and Penny Nom lui répond. 





Degrees and grads 
20060406 

Nazanin pose la question : which angle if you add 15 to its degree we can find its measure by grad? Stephen La Rocque lui répond. 





Degree 
20060209 

Jessica pose la question : I am a 9th grade home school student and have started doing degrees of terms in my math book. The following is some examples they give:
25a to the 4th power is a 4th degree term
67c to the 9th power is a 9th degree term
x is really x to the 1st power so it is a 1st degree term
10 is really 10x to the 0 power so it is a 0 degree term
They go on to say that every constant is a zero degree term.
My question is why isn't a constant, like 10, simply to the 1st power (making is a 1st degree term) like x. Claude Tardif lui répond. 





The degree sequence of a graph 
20040331 

Ali pose la question : How can i find out {6,6,5,5,5,3,2}is not the sequence of the points of a simple graph,without drawing it? Penny Nom lui répond. 





Cosine of 35 degrees 
20040303 

Jason pose la question : How do you find the exact solution to cosine 35 degrees. Chris Fisher lui répond. 





Polynomials degree 4 and bigger 
20030626 

Stephen pose la question :
How do I show kids how to find all the zeros for polynomials degree 4 and bigger.
For examples: r(x) = x^{5}11x^{3}7x^{2}+77 = (x^{2}11)(x^{3}7) and s(x) = x^{4}121 = (x^{2}11)(x^{2}+11) Also am I correct when I say that the following are irreducible? f(x) = x^{2}11 g(x) = x^{3}7 h(x) = x^{4}5 Harley Weston lui répond. 





Radians 
20030116 

Erikson pose la question : I am a student in the 10th grade and attending advanced math at my high school. I was assign to do a report about the unit circle and the radian. But there seems to be no information available about the history of the radian; who first found out about them, which civilizations used it if any. Well, hopefully you'll assist me in this troubling question. Thank you for your kind consideration. Penny Nom lui répond. 





A polynomial 
20020414 

A student pose la question : A polynomial function is described by the following conditions: f(x) has two real zeros at x= 2 and x= 1, each of multiplicity 2 f(x) has two complex zeros as x goes to infinity, f(x) goes to +infinity as x goes to +infinity, f(x) goes to +infinity f(x) has a yintercept at (0,2) Sketch a polynomial function that satisfies the above conditions. Write an equation for function f(x) Write another function g(x) that also satisfies the above parameters. Penny Nom lui répond. 





A degree 5 polynomial 
20020217 

Carla pose la question : Write an equation for a polynomial of degree 5 given the following zeros: 7+3i, 2+sqrt(13), 6 Penny Nom lui répond. 





Why quadratic for a second degree equation? 
20011020 

Jana pose la question : Why do we use the word quadratic to describe second degree equations? Penny Nom lui répond. 





Radian measure 
20010726 

Amy pose la question : i have to find out what is meant by the radian measure of an angle and compare it to the measure of an angle in degrees. Harley Weston lui répond. 





Law of cosines 
20010220 

Emily pose la question : I missed a few days of class and I can't figure out how to solve Law of Cosines problems. I have the notes and formulas but I can't figure out how to do the math involved to answer the problems. I am also getting confused about how to use degrees and seconds in the Law of Sine and Cosine. I can't seem to get the correct answers and I don't really know how to solve them and enter them into my TI 86. Harley Weston lui répond. 





Motivators 
20010116 

Michelle Stapley pose la question : Do you know of any (or where I can find) student motivators for math at the secondary level? Basically any way I can motivate my students to WANT to learn math. Penny Nom lui répond. 





The side length ratios of some triangles 
20000404 

Alexis Lockwood pose la question : I am doing a project for my Math 30B class regarding the side length ratios of 454590 degree and 306090 degree triangles. I would really appreciate any assistance in answering the following questions, or even direction to an appropriate web site or resource on the matter. Harley Weston lui répond. 





Careers after a math degree 
20000331 

Jeanne Hyer pose la question : What type of careers can a person have with a math degree, and what is the closest thing that you have to an undergraduate degree in financial mathematics? (Administration, math, actuarial science, etc.) Harley Weston lui répond. 





Specific heat 
19991222 

Irena pose la question : In transferring 1260J of heat to water, the temperature of 0.20 kg of mercury falls 50 K. Calculate the specific heat capacity of mercury using the equation C= Q/(m)(delta t) i know that Q= 1260J because it's loosing heat and m= 0.2kg and since i have to use 'C i have to convert Kelvins into Celsius (i also know that 'C has to be negative since it looses heat) . . . Harley Weston lui répond. 





Degrees and triangles 
19990909 

Sandra Mills pose la question : Are there any triangles which are not 180 degrees? I am also in need of information on the history of degree measure for an angle. Walter Whiteley lui répond. 





Question about 3rd degree polynomials 
19990423 

Patrick Bryan pose la question : What is the general solution to the equation with the form: a*x^3 + b*x^2 + c*x + d = 0 I have once seen a solution to this a few years ago, but I do not recall if it was a general solution. What I do know, is that you could simplify this equation to: a*x'^3 + p*x' + q = 0... Doug Farenick lui répond. 





The sum of the angles of a triangle is 180 degrees 
19980219 

Quin Liu pose la question : How do you prove that the sum of the angles of a triangle is 180 degrees? Is there a proof? what is it? Chris Fisher lui répond. 





Trigonometric functions 
19971221 

Calvin Cheng pose la question : My name is Calvin and I have a year 12 question for you to help me with. From a point S, the angle of elevation of the top of a tower due north of it is 20 degrees. From R, due east of the tower, the angle of elevation is 18 degrees. S and R are 100m apart. Find the height of the tower. Harley Weston lui répond. 





Why is a circle divided into 360 degrees? 
19960930 

Kurtis Kredo pose la question : I was recently wondering why a circle has been divided in to 360 degrees. When I asked my physics teacher he could not think of an answer. His guess is that it probably has to do with people long ago using the base 6 number system. I have a small inkling that it has to do with easy conversion or usage with radians or grads. Chris Fisher lui répond. 

