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The value of theta(0 lt a lt pi/2) sati...

The value of `theta(0 lt a lt pi/2)` satisfying the equation `sin^2theta–2costheta+1/4= = 0` is.

A

`pi/2`

B

`pi/3`

C

`pi/4`

D

`pi/6`

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The correct Answer is:
B
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