
Robert J. answered 12/12/13
Tutor
4.6
(13)
Certified High School AP Calculus and Physics Teacher
cos^2xcot^2+cos^2x
= cos^2x(cot^2x+1)
= cos^2x csc^2x
= cot^2x <==Answer
Serenity E.
asked 12/12/13Robert J. answered 12/12/13
Certified High School AP Calculus and Physics Teacher
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