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Prove that : cosC-cosD = 2sin frac (C+D...

Prove that :
`cosC-cosD = 2sin frac (C+D)(2) sin frac (D-C) (2)` .

Answer

Step by step text solution for Prove that : cosC-cosD = 2sin frac (C+D)(2) sin frac (D-C) (2) . by MATHS experts to help you in doubts & scoring excellent marks in Class 11 exams.

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