Find the area of the region that lies within the limacon r=3+2cos(theta) and outside the circle r=4. I know the formula and how to solve it and i know that the endpoints for the integral are (pi/3) and (-pi/3) but im not sure how they got the endpoints. They being my answer sheet.

Question

megannicole51 · Answer

@agent0smith do u know how to do this?

anonymous · Answer

you just have to put value of r in given equation to get upper and lower limits.. remember  cosine is even function so you get two values when you put r=4 in given equation.. and  that's all..!

agent0smith · Answer

Not 100% sure but i know this link can help, used it last time http://tutorial.math.lamar.edu/Classes/CalcII/PolarArea.aspx