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if f(x)=(sin (x+alpha)/(sin(x+beta),alph...

if `f(x)=(sin (x+alpha)/(sin(x+beta),alpha ne beta ` then f(x) has

A

`beta - alpha = k pi`

B

`beta - alpha ne k pi`

C

`beta -alpha = 2k pi`

D

none of the abve

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The correct Answer is:
B
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