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In Delta ABC, which one is true among th...

In `Delta ABC`, which one is true among the following ?

A

`(b+c)cos ""A/2=a sin ((B+C)/(2))`

B

`(b+c) cos ((B+C)/(2))=a sin ""A/2`

C

`(b-c) cos ((B-C)/(2))=a cos ((A)/(2))`

D

`(b-c) cos ""A/2 =a sin ((B-C)/(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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