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Mathematics
Problem
What is the exact length of the curve
r
=
4
sin
θ
r=4\sin\theta
r
=
4
sin
θ
for
0
≤
θ
≤
π
0\le \theta\le \pi
0
≤
θ
≤
π
? a)
2
π
2\pi
2
π
b)
4
π
4\pi
4
π
c)
6
π
6\pi
6
π
d)
8
π
8\pi
8
π
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