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If a = [(cos theta , - sin theta),(sin ...

If ` a = [(cos theta , - sin theta),(sin theta , cos theta)]` , what is the value of `theta` satisfying the equation `A^(T) + A = I_(2)` ?

A

` (pi)/(2)`

B

` (pi)/(2)`

C

` (pi)/(6)`

D

`pi`

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The correct Answer is:
B
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