Math, asked by taaruquereshi1692, 11 months ago

Cos C- Cos D=......

Answers

Answered by Anonymous

2

Answer:

Cos C - Cos D = -2sin (c+d)/2 sin (c-d)/2

Answered by rohankarn35

0

Answer:

-2sin(a+b/2)

Step-by-step explanation:

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