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If cos(A+B) = 0 and sin(A-B) = 1/2, then...

If cos(A+B) = 0 and sin(A-B) = 1/2, then the value of B is: (Given `0^@ यदि cos(A+B) = 0 और sin(A-B) = 1/2, B का मान है:

A

`45^@`

B

`90^@`

C

`60^@`

D

`30^@`

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