If |(cos(A+B),-sin(A+B),cos2B),(sinA,cos...

If `|(cos(A+B),-sin(A+B),cos2B),(sinA,cosA, sinB),(-cosA, sinA, cosB)|=0` then the value of B is -

A

(a) `(2n+1)(pi)/(2)`

B

(b) `npi`

C

(c) `(2n+1)pi`

D

(d) `2npi`

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The correct Answer is:

A

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