MathDB
Double angle

Source:

April 28, 2022

Problem Statement

Given that (2cos⁡27.5−cos⁡75−1)2(2\cos^2{7.5}-\cos{75}-1)^2 can be expressed as pq\frac{p}{q}, what is p+qp+q?
2022 CCA Math Bonanza Tiebreaker Round #3
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