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Geometry Level 3

Evaluate:

2cos21+2cos22+2cos23+2cos24+2cos25+...+2cos2902cos^{2}1 + 2cos^{2}2 + 2cos^{2}3 + 2cos^{2}4 + 2cos^{2}5 + ... + 2cos^{2}90

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Note: All are in degrees.

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