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If A (theta) = ((1,tantheta),(-tantheta,...

If `A (theta) = ((1,tantheta),(-tantheta,1)) and AB=I` then `(cos^(2) theta)` B is equals to a)`A(theta)` b)`A(-theta)` c)`A(theta//2)` d)`A(-theta//2)`

A

`A(theta)`

B

`A(-theta)`

C

`A(theta//2)`

D

`A(-theta//2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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