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If A(theta) = [(cos theta ,sin theta ),(...

If `A_(theta) = [(cos theta ,sin theta ),(-sin theta ,cos theta )] ` then `A_(alpha)A_(beta)` equals :

A

`A_(alphabeta)`

B

`A_(alpha+beta)`

C

`A_(alpha-beta)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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