Sujet: identity liste de sujets
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57 articles trouvés pour ce sujet.

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	Factoring an interest formula		2020-09-29
		Kenneth pose la question : Hello P + Pr has a common factor of P so it can be expressed as P(1 + r) after the P is factored out.. How does the "P" get in front of (1 + r)? P/P + Pr/P = 1 + r What step is used to show that P is added in front of (1 + r)? I thank you for your reply. Harley Weston lui répond.
	A trig identity		2015-10-28
		Gail pose la question : verify sec(x) =cot(x)+tan(x)/csc(x), the csc(x) is under both the whole term cot(x) + tan(x) Penny Nom lui répond.
	A trig identity		2013-01-04
		Tehmas pose la question : Prove sinC+sinD=2sin(C+D/2)cos(C-D/2) Harley Weston lui répond.
	A trig identity		2012-01-08
		Joe pose la question : Prove this Trig. Identity : ((cos2θ + sinθ-1) / tanθ ) + sin2θ = cosθ Penny Nom lui répond.
	I started with Euler's identity and manipulated it		2011-11-14
		anonymous pose la question : I started with Euler's identity and manipulated it e^i*pi=-1 e^-i*pi=(-1)^-1 e^-i*pi=-1 e^-i*i*pi=(-1)^i e^--pi=(-1)^i e^pi=(-1)^i type it in in a calculator and you get e^pi=23.1406926... and (-1)^i=0.0432139183... What did I do wrong? Robert Dawson lui répond.
	sin A/1+cos A + 1+cos A/sin A = 2cosec A		2011-10-20
		Neeraj pose la question : sin A/1+cos A + 1+cos A/sin A = 2cosec A Penny Nom lui répond.
	Tan(x+pi)-tan(pi-x)=2tan(x).		2011-01-09
		Steven pose la question : Verify the identity: Tan(x+pi)-tan(pi-x)=2tan(x) Penny Nom lui répond.
	A trig identity		2010-03-27
		Anne pose la question : Prove: (2tanx-sin2x)/2sin^2x=tanx Penny Nom lui répond.
	A trig identity		2010-03-08
		Kim pose la question : I am having trouble proving this trig identity (sin^2 x + 2 cos x-1) / 2+cos x - cos^2 x = 1/ (1+ sec x) Penny Nom lui répond.
	A trig identity		2010-01-24
		Natalie pose la question : hi, i need help proving the following trig identity. i cant seem to figure out how to do it. thanks so much. (1+sin2x)/cos2x = cos2x/(1-sin2x) Penny Nom lui répond.
	A trig identity		2010-01-21
		Alesia pose la question : How to prove Csc(A+B) = (csc A Csc B)/ (Cot A+ Cot B) Penny Nom lui répond.
	A trig identity		2010-01-05
		Christine pose la question : I need help with this whole paper here is one problem csc^2x-cot^2x/1-sin^2x=sec^2x by the ^2 i mean squared pleease Penny Nom lui répond.
	sin x / 1+ cos x = csc x - cot x		2009-11-18
		Mansi pose la question : i need a hint on how i could prove the following identity: sin x / 1+ cos x = csc x - cot x Harley Weston lui répond.
	A trig identity		2009-07-10
		sam pose la question : I need to prove: tan x (cot x + tan x) = sec2 x (the "sec2" is "sec squared") I am totally stuck!! Thanks! Stephen La Rocque and Harley Weston lui répond.
	A trig identity		2009-06-30
		sumayya pose la question : prove that sin A (1+tan A)+cos A (1+cot A)= sec A+ cosec A Robert Dawson lui répond.
	Finding an Acute Angle using Trigonometric Identities		2009-06-29
		Nazrul pose la question : How can I find the value of A if sinA-cosA=1 , where A is an acute angle. Stephen La Rocque lui répond.
	sin x/ 1+cos x = 1-cos x/ sin x		2009-05-30
		rita pose la question : prove: sin x/ 1+cos x = 1-cos x/ sin x Stephen La Rocque lui répond.
	Sec(2x)		2008-11-23
		Evan pose la question : Prove that this is an identity... sec2x = sec^2x / 2 - sec^2x Harley Weston lui répond.
	A trig Identity		2008-11-13
		Rebecca pose la question : Question from Rebecca, a student: How do I prove:      1/sin@                csc@                -2sin@ ________      +       ______       =    _____ 1 + CSC@         1-1/sin@                 cos^@ Penny Nom lui répond.
	A trig identity		2008-11-03
		Student pose la question : verify cos(2x)=(cot(x)-tan(x))/(cot(x)+tan(x)) Penny Nom lui répond.
	TRIG IDENTITIES		2008-08-17
		VINCE pose la question : HOW DO YOU SIMPLIFY THE FOLLOWING:- 2sin3(theta)cos3(theta)? Regards Harley Weston lui répond.
	Graphing Using Double Angle Identities		2008-07-16
		Hodan pose la question : the Question is: Describe how you could use your knowledge of Double angle formulas to sketch the graph of each function. Include a sketch with your description.A) F(x)=sin x cos x B)F(x)=2 cos(squared)x C) F(x)= tan(x) (divided) by 1-tan(squared) x Janice Cotcher lui répond.
	cos3A=-1/3 find cos6A		2008-05-15
		mike pose la question : cos3A=-1/3 find cos6A Penny Nom lui répond.
	2 tan theta /(1 + tan^2 theta) = sin 2theta		2008-03-25
		Charmaine pose la question : I'm having trouble on where to begin proving identities. I must prove that (2 tan theta / 1 + tan^2 theta) = sin 2theta Penny Nom lui répond.
	(1-tanx) / (1+tanx) = (1-sin2x) / cos2x		2008-02-14
		isaiah pose la question : i'm having trouble proving 1-tanx / 1+tanx = 1-sin2x / cos2x, can anyone help me from going crazy? Penny Nom lui répond.
	A trig identity		2007-11-28
		Julia pose la question :     sin4x              1 - cos2x ------------    x      ----------         =     tanx 1 - cos4x               cos2x Harley Weston lui répond.
	A trig identity		2007-11-10
		James pose la question : I need to prove trig identities, and I can't figure this one out 1 + sinx - cosx         1 - cosx -------------------- = ------------- 1 + sinx + cosx         sinx Chris Fisher lui répond.
	A trig identity		2006-12-28
		Courteny pose la question : Prove that 1 - cos 2x + sin 2x (divided by) 1 + cos 2x + sin 2x = tan x Penny Nom lui répond.
	A trig identity		2006-12-14
		Zamira pose la question : i need help with this proof: ((cot(x)-tan(x))/ cot(x) + tan(x)) = cos (x) Penny Nom lui répond.
	Sin 2x / 1-Cos 2x = 2 Csc 2x - Tan x		2006-12-06
		Mark pose la question : I need to prove the following: Sin 2x / 1-Cos 2x = 2 Csc 2x - Tan x Steve La Rocque lui répond.
	tan1/2x + cot1/2x = 2cscx		2006-11-04
		Jazmin pose la question : Prove tan1/2x + cot1/2x = 2cscx Penny Nom lui répond.
	A trig identity		2006-06-04
		Courtney pose la question : Show that this equation is an identity: (sin x + sin 2X)/(cos x - cos 2x) = cot(x/2) Stephen La Rocque lui répond.
	A trig identity		2006-03-28
		Iqbal pose la question : Could you please prove, [tan(x)-sin(x)]/sin3(x)=sec(x)/[1+cos(x)] Stephen La Rocque lui répond.
	A trigonometric identity		2006-01-22
		Sarfaraz pose la question : Prove the following trigonometric identity. sin2x = tan2x/(1+tan2x) Penny Nom lui répond.
	A pair of trig equations		2005-12-05
		Kevin pose la question : I am trying to solve for A and B but haven't been able to find a trig identity that will help me. 1.414 = .5cosA + cosB .5 = .5sinA - sinB how do I solve this? Penny Nom lui répond.
	cos(2x) = sin(3x)		2005-04-14
		A student pose la question : Show that if x= 18 degrees, then cos2x =sin 3x. HENCE find the exact value of sin 18 degrees, and prove that cos 36 - sin 18 =1/2. Andrei Volodin, Claude Tardif and Penny Nom lui répond.
	tan55.tan65.tan75=tan85		2005-03-30
		Jesus pose la question : My name is Jesus and I´m a secondary student. I´m trying to verify a trigonometric identity but I don´t know how to do it.please help me!!!!!!!!!. The identity is : tan55º.tan65º.tan75º=tan85º (the sign (.) indicates multiplication) Chris Fisher and Penny Nom lui répond.
	A trig identity		2005-03-06
		Patrick pose la question : im trying to verify this identity: sin(x)+sin(5x) -------------------- = tan(3x) cos(x)+cos(5x) Chris Fisher lui répond.
	A trig identity		2003-11-12
		A student pose la question : I can't prove this identity. Can you please help me? (1-tanx)/(1+tanx)=(1-sin2x)/(cos2x) Penny Nom lui répond.
	A trig identity		2003-05-20
		Patty pose la question : Please help with the following 1/ tanx + cotx = sinxcosx Penny Nom lui répond.
	Three proffs of a trig identity		2003-03-18
		Nadene pose la question : Prove the identity. cos [x + (y-pi/2)] = sin (x+y) A hint was also provided which is: "Apply cos (alpha + beta) first then within that apply cose (alpha-beta)" Penny Nom lui répond.
	A trig identity		2003-02-22
		Ron pose la question : We have spent hours trying to solve the following identity without success. Can you give us some hints as to how it is done? 1 + tan(x) tan(2x) = tan(2x) cot(x) -1 Penny Nom lui répond.
	The identity property		2002-11-07
		Stephanie pose la question : I am a student teacher this semester in the third grade. I was looking at our math competencies and saw that we needed to teach the identity property. Is this the same as the distributive property? If not, what is it? Penny Nom lui répond.
	An identity?		2002-10-27
		Jenna pose la question : I can't prove 1-sinQ 1 ---- = tanQ + --- 1+sinQ cosQ Penny Nom lui répond.
	An identity(?)		2002-05-02
		A student pose la question : prove identity sin 2x/1-sinx= secx+1/secx Paul Betts lui répond.
	A trigonometric identity		2002-03-22
		Debby pose la question : I am stuck on a problem and wondering if you can help?? It is: Prove the following: sec2(X)+csc2(X) = sec2(X)csc2(X) Harley Weston lui répond.
	A trig identity		2001-07-27
		Jeff pose la question : prove this identity and show steps tan(x/2+pi/4)=secx+tanx Harley Weston lui répond.
	Trig identity crisis		2000-11-29
		Rhiannon pose la question : I have tried many times to find the answer to these problems but I can't I am in grade 12 tan(x)=csc2(x)-cot2(x) cos(x)/csc(x)-2sin(x)=tan(x)/1-tan(x) cos(x)[ tan2(x)1-1]/cos2(x)+sin2(x)=sec(x) Harley Weston lui répond.
	A trigonmetric identity		2000-05-15
		Caitlin pose la question : My name is Caitlin and my question is from 11th grade math and I'm a student my question is I need to solve this identity : cos x csc x - sin x sec x = 2 cot 2x Paul Betts lui répond.
	Matrices Information		2000-05-02
		William Avery pose la question : I am an OAC student at Governor Simcoe Secondary School in St. Catharines Ontario. Today at school we were handed an independent study project by our Finite teacher. This assignment is based on Matrices, it involves performing some simple matrix calculations, but also involves a written section. This written section asks for the following: . . . Marley Weston lui répond.
	A trig identiry		2000-02-23
		Ashlee pose la question : I am having problems doing this problem. Can you help? Verify the identity: (1+cot2X)(1-cos2X)=2 Harley Weston lui répond.
	A trig identity		2000-02-17
		Eric pose la question : Question: How do I solve this problem? sin3x cos3x _____ - _____ = 2 sinx cosx Chris Fisher lui répond.
	Proving a trigonometric identitiy		1999-12-17
		Ryan pose la question : I need to figure out how to prove that sec2x + csc2x = sec2x csc2x. I am not sure where to start out with it and whether I should use reciprocal, quotient, or pythagorean. Penny Nom lui répond.
	A trig problem		1999-06-03
		Stu Barnes pose la question : cos(theta) / 1+ sin(theta)=sec(theta)-tan(theta) I've being having trouble with this one on my correspondance course. Harley Weston lui répond.
	Triminoes		1998-09-09
		Roxanne Hale pose la question : I am doing an investigation about a game called triminoes (like dominoes). The game is played using triangular pieces of card. Each card has 3 numbers on it. I have to investigate the relationship between the number of trimino cards in a set and the largest number on the cards. I found; largest no. used 0 1 2 3 4 no. of trimino cards 1 4 10 20 35 I was ginen the formula for this which is: UN= UN - 1 + 1/2 (n + 1 ) (n+2) UN=no. of trimino cards n= largest no. I don't know how to get to this equation I think it has something to do with triangle numbers! Penny Nom lui répond.
	A trig identity		1996-03-11
		Azmat Hussain pose la question : Is there an easier/another way to prove the trig identity cos(a+b) = cos(a)cos(b)-sin(a)sin(b)? Penny Nom lui répond.
	Trig identities		1995-11-30
		Azmat pose la question : Why do we work on the two sides of a trig identity separately? Harley Weston lui répond.

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