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OpenStudy (anonymous):
sin^2 theta - cos^2 theta = -1 please show the steps! thanks!
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OpenStudy (anonymous):
-1 (-sin^2 theta + cos^2 theta) = -1 -sin^2 theta + cos^2 theta = 1 cos^2 theta - son^2 theta =1 cos(2x) = 1 Can you solve it from there?
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