Math, asked by saikirankamarthi995, 1 year ago

CosC+CosD=??????
SinC+SinD=???????

Answers

Answered by sowmya0

1

Answer:

cosC+cosD=2cos (C+D/2).cos (C-D/2)

sinC+sinD=2sin (C+D/2).(C-D/2)

saikirankamarthi995: hi

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