Thread: polar coordinate

Find the area of the region inside: but outside

First find the points of intersection.

So or .

So .

how did you get 81 in the 2nd integral?

it should be .

Originally Posted by viet

Find the area of the region inside: but outside

Maple-generated graph

plot([8*sin(theta),4],theta=0..2*Pi,coords=polar,thickness=3,color=[red,blue]);