Math, asked by sparshvaidya123, 1 year ago

cosC-cosD=

2sin(C+D/2)sin(D-C/2)
or
-2sin(C+D/2)sin(D-C/2)

if both please explain

Answers

Answered by progamerparth

3

2sin(C+D/2)*sin(D-C/2) is correct

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