SOLUTION: cos^4 theta - sin^4 theta = cos^2 theta - sin^2 theta
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Question 947382: cos^4 theta - sin^4 theta = cos^2 theta - sin^2 theta
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
cos^4 theta - sin^4 theta = cos^2 theta - sin^2 theta
simplify:
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