Number of roots of cos^(2) x + (sqrt(3 +...

Number of roots of `cos^(2) x + (sqrt(3 + 1))/( 2) si x - (sqrt( 3))/( 4) - 1 = 0 ` which lie in the interval `[ - pi, pi]` is

A

2

B

4

C

6

D

8

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The correct Answer is:

B

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