Math, asked by anjalisantosh2004, 8 months ago

If cos 11 alpha = pi . Then cos alpha - cos 2 alpha +cos 3 alpha - cos 4 alpha + cos 5 alpha=

Answers

Answered by chiragbbansal
0

Answer:

f alpha=pi/3 prv cos alpha cos 2 alpha cos 3 alpha cos 4 alpha cos 5 alpha cos 6 alpha=1/16

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