Math, asked by varsha5675, 8 months ago

prove that cos theeta×cos2 theeta×cos 3 theeta=1/4​

Answers

Answered by Dev4116
0

Answer:

1/2 +1/2+1/2+1/2+1/2+1/3+1/2+1/2+/1+3/2(/2+2/1/)

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