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Solve 4 cos^(2)x+6 sin^(2)x=5....

Solve `4 cos^(2)x+6 sin^(2)x=5`.

Text Solution

Verified by Experts

The correct Answer is:
`x=n pi pm pi/4, n in Z`
`4+2 sin^(2) x=5`
or `sin^(2) x=1/2= sin^(2) pi/4`
`rArr x=n pi pm pi/4, n in Z`
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