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Find all the solution of 4 cos^(2)x sin...

Find all the solution of ` 4 cos^(2)x sinx -2 sin^(2) x=3 sinx `

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The correct Answer is:
`{x|x = npi} cup {x|x = n pi +(-1)^(n) (pi)/(10)} cup {x|x = n pi - (-1)^(n)(-(3pi)/(10))}`
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