So, I've tried this problem about 10 times, and I'm not quite sure what I'm doing wrong.

Find the area inside one leaf of the rose

r= 4sin(5θ)

I know the graph looks like a 5 leaf rose.

I used the equation A= integral (1/2r^2)dθ

Maybe I'm bounding my integral wrong?? I have it from 0 to pi/5

Or maybe my antiderivative is wrong??? I have 4θ - (4/10)(sin10θ)

Any help would be greatly appreciated! This question is really starting to frustrate me!