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If AB=0, then for the matrices A=[(cos...

If AB=0, then for the matrices
`A=[(cos^(2)theta, cos theta sin theta)<(cos theta sin theta, sin^(2)theta)]`
and
`B=[(cos^(2)phi, cos phi sin phi),(cos phi sin phi, sin^(2)phi)], theta -phi` is

A

an odd number of `(pi)/2`

B

an odd multiple of `pi`

C

an even multiple of `(pi)/2`

D

0

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The correct Answer is:
A
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