यदि A={:[(cos alpha,-sin alpha),(sin al...

यदि `A={:[(cos alpha,-sin alpha),(sin alpha,cos alpha)]:}` तथा A+A'=I हो तो `alpha` का मान है

A

`(pi)/(6)`

B

`(pi)/(3)`

C

`pi`

D

`(3pi)/(2)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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