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If 7sin^2 theta + 3 cos^2 theta = 4, the...

If `7sin^2 theta + 3 cos^2 theta = 4`, then the value of `cos theta(0^@le theta le 90^@)` is

A

`(sqrt(6))/(2)`

B

`(sqrt(3))/(2)`

C

`(sqrt(2))/(2)`

D

`(sqrt(5))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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