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Mathematics, 16.12.2020 02:50 wowihavefun

Find the exact value using a sum or difference identity: cos (-300°)
Hint: sin(A + B) = sin A cos
B = cos A sin B
cos(A + B) = cos A cos B = sin A sin B

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Find the exact value using a sum or difference identity: cos (-300°)
Hint: sin(A + B) = sin A...

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