([(sin x + siny)(sinx-siny)])/([(cos x +...

`([(sin x + siny)(sinx-siny)])/([(cos x + cos y)(cosy-cosx)])` का मान क्या है ?

A

0

B

1

C

`-1`

D

2

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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