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Solution of 7 sin ^(2)x+3 cos^(2)x=4 is...

Solution of `7 sin ^(2)x+3 cos^(2)x=4` is

A

`n pi +-pi//2`

B

`n pi +-pi//4`

C

`n pi +-pi//3`

D

`n pi +-pi/6`

Text Solution

Verified by Experts

The correct Answer is:
D
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