If sin theta = cos theta , " then " 2 t...

If ` sin theta = cos theta , " then " 2 tan^(2) theta + sin^(2) theta -1` is equal to .............

A

`(-3)/(2)`

B

`(3)/(2)`

C

`(2)/(3)`

D

`(-2)/(3)`

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The correct Answer is:

B

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