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4cosxsinx=1

how do I solve 4cosxsinx=1?

4cosx sinx = 1

Do you know the identity $sin(2x) = 2cos(x)sin(x)$ ?

Well, use that here.

$4cos(x) sin(x) = 1$

$2(2cos(x) sin(x)) = 1$

$2sin(2x) = 1$

Can you continue now? Post your answer :)

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