Find the sum: Cos^2 (0) + Cos^2 (2) + Cos^2 (4) + Cos^2 (356) + Cos^2 (358) + Cos^2 (360)

Thanks in advance.

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- August 20th 2010, 05:16 AMJohnLord123Need help on this tricky question
Find the sum: Cos^2 (0) + Cos^2 (2) + Cos^2 (4) + Cos^2 (356) + Cos^2 (358) + Cos^2 (360)

Thanks in advance. - August 20th 2010, 10:02 AMearboth