Question

find the perimeter bound by r = 2sinθ and r=1
plese help be used by integration.

Answer 1

you probably have to use chain rule, to derive
2*f(x)

and

f'(x)

Answer 2

best to start with a drawing...

Answer 3

first of all, I assume you mean 'find the area bounded by r = 2sinθ and r=1 , correct?

Answer 4

yes.

Answer 5

so what does the graph of r=1 look like?

Answer 6

actually it is a polar coordinate problem in Length of arc..

Answer 7

oh, then that's a bit different...

Answer 8

and then draw \(r=\sin(2\theta)\) on that...

Answer 9

r = 2sinθ is what is given not r = sin(2θ)

Answer 10

ok but why did you shade in the area? I thought we wanted arc length. Which arc length?