(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the area of the region inside: r = 9 sinθ but outside: r = 1

2. Relevant equations

3. The attempt at a solution

r = 9 sinθ is a circle with center at (0, 4/2) and radius 4/2 while r= 1 is a circle with center at (0, 0) and radius 1. The two curves intersect where sin(θ)= 1/9. For 0 ≤ θ ≤ π that is satified by θ=sin^-1(1/9) and θ=π-sin^-1(1/9).

This is where i get lost setting up the differential for the area?

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# Homework Help: Polar Coordinates problem area of region

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