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 Sujet: arcs
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 Two overlapping arcs in a square 2014-03-15 Jean pose la question :I have a square with side 4 cm. There are two overlapping arcs going from vertex to diagonal vertex. The other two vertices are the center of the arcs, which are shaded. How do I find the area of the shaded arcs? The overlapping arcs when shaded resemble a long thin football Thank you for your help.Penny Nom and Walter Whiteley lui répond. A problem with arc sine 2006-07-07 Scott pose la question :How to prove arc sin x = arc tan( (x)/√(1-x2)) Penny Nom lui répond. The interior angles of a right triangle 2006-05-20 Greg pose la question :I am wondering if there is a way to figure out the interior angles of a right triangle if we know ONLY the side lengths, and the trick is, we CANNOT use arctangent!Leeanne Boehm and Penny Nom lui répond. Sectors and arcs 2006-01-25 Wael pose la question :How is the area of an arc (alpha*pi*r squared/360) derived? How is the length of an arc (alpha*pi*r/180) derived?Penny Nom lui répond. arcsech x 2005-02-10 Monica pose la question :Prove that arcsech x = ln[(1 + (1-x2)(1/2)) / x ]Penny Nom lui répond. Arcs and chords 2005-01-09 Aniesha pose la question :A chord of a circle is 48 centimeters long and is 10 centimeters from the center of the circle. Find the radius?Penny Nom lui répond. A belt around two pulleys 2004-12-07 Ian pose la question :a belt is stretched around two pulleys whose centers are d units apart and whose radii are R and r respectively (obviously R+r

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