Sinx. Cosx=1/2?

1 Answer
F. Javier B. · mason m
May 2, 2018

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Explanation:

Remember that 2sinxcosx=sin2x

In our equation sinxcosx=1/2 multiply by 2 both sides

2sinxcosx=1, then sin2x=1

Thus we have 2x=90º=pi/2+2kpi because sinx is periodic

Finally we have x=pi/4+kpi where k is an integer

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