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sin C + sin D=...

sin C + sin D=

A

` 2"sin" (C+D)/2 "cos"(C-D)/2`

B

`2"cos" (C+D)/2 "sin"(C-D)/2`

C

`2 "cos" (C+D)/2 "cos" (C-D)/2`

D

`2 "sin"(C+D)/2 "sin"(D-C)/2`

Text Solution

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The correct Answer is:
A
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