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In triangleABC, 2(b-c)cos^(2)((A)/(2))=...

In `triangleABC, 2(b-c)cos^(2)((A)/(2))=`

A

`b(cosA-cosC)`

B

`a(cosB-cosC)`

C

`b(cosC-cosA)`

D

`a(cosC-cosB)`

Text Solution

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The correct Answer is:
D
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