Homework Help: Calculus

Posted by Anonymous on Friday, March 1, 2013 at 2:46am.

I am having trouble solving this problem:

"Find where the tangent line is horizontal for r=1+cos(theta)"

I would really appreciate the feedback, I'd like to know how to go about solving problems like these. Thank you!

Calculus - Damon, Friday, March 1, 2013 at 3:32am
Where the derivative is zero

dr/dT = - sin T
so when T = 0 or n * pi

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