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If [(1,-tan theta),( tan theta,1)][(1,ta...

If `[(1,-tan theta),( tan theta,1)][(1,tan theta),(-tan theta, 1)]^-1=[(a,-b),(b,a)]` then

A

`a=1,b=1`

B

`a=cos 2 theta, b=sin 2 theta`

C

`a=sin 2 theta, b =cos 2 theta`

D

none of these

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The correct Answer is:
B
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