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How do you express cos(pi/ 3 ) * cos (( pi) / 6 ) without using products of trigonometric functions? | Socratic
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calculus - Solve $\int_{0}^{\pi/2} \arccos\left( \frac{\cos(x)}{1+2\cos(x)} \right) \mathrm dx$ - Mathematics Stack Exchange
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SOLVED:Find the exact value of each composition without using a calculator or table. arccos(cos(-π/ 3))
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