2 cos [(C + D)/2] sin [(C -D)/2] किसके ब...

`2 cos [(C + D)/2] sin [(C -D)/2]` किसके बराबर है ?

A

`sinC + sin D`

B

`sin C - sinD`

C

`cosC - cos D`

D

`cosC + cosD`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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