Math, asked by rasoolbi1997, 21 days ago

ICA-B-C-2S Prove that
OS
cos(S-A)-cos(S-B)+cos(S-C)+cosS = 4cos
-2 cos
2

Answers

Answered by anitasingh0107887

0

Answer:

Pleasemark Brainlist

Step-by-step explanation:

coso(2)

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