Posted by **Cynthia** on Saturday, August 4, 2012 at 9:36pm.

Which of the following is a step in evaluating.

(Integral) cos^2 5x dx

A. (Integral) 1+cos10x/2 dx

B. (Integral) 1-cos10x/2 dx

C. (Integral) 1+cos10x/20 dx

D. (Integral) 1-cos10x/20 dx

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