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If sintheta=costheta then 2tan^(2)theta+...

If `sintheta=costheta` then `2tan^(2)theta+sin^(2)theta-1=___`.

A

`(-3)/2`

B

`3/2`

C

`2/3`

D

`(-2)/3`

Text Solution

Verified by Experts

The correct Answer is:
B
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