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If (1-tan theta)(1+tan theta)sec^2 theta...

If `(1-tan theta)(1+tan theta)sec^2 theta+2^(tan^2 theta)=0` then in the interval `(-pi/2,pi/2),` the value of `theta` is

A

`sqrt(2)-1`

B

`1-sqrt(2)`

C

`pi//4`

D

`3pi//4`

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The correct Answer is:
b
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