length of an arc curve

Calculus
Tutor: None Selected Time limit: 1 Day

May 19th, 2015

dx/dy = 2cosy

ds=(1+(2cosy)^2 )^1/2 dy

ds=(1+4cos^2 y )^1/2 dy

ds=2/3(1+4cos^2y)^3/2 [(pi/9)-8*pi/9] [-sin^2(60)+sin^2(160)]

ds=2/3(1+4cos^2y)^3/2 [(pi/9)-8*pi/9 (-0.633)

May 19th, 2015

it saids not correct :(

May 19th, 2015

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May 19th, 2015
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May 19th, 2015
Dec 9th, 2016
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