Math, asked by aasthasingh87, 9 months ago

6. Prove that
(i) cos A + cos 3A + cos 5A + cos 7A = 4cos A cos 2A cos 4A

Answers

Answered by brunoconti

2

Answer:

Step-by-step explanation:

BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST

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