12-01-2018
Mathematics

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cosxsinx-2cosx=0
I dont know how to solve this

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tynollette tynollette

12-01-2018

factor out cosx: cosx(sinx-2)=0
cosx=0 or sinx-2=0
cosx=0 or sinx=2
the largest value of sinx is 1, sinx will never be 2, so cosx=0, x=π/2 or 3π/2 are the two answers.

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