find the value of cos

Geometry Level 2

128cos12 cos24cos36cos48cos60cos2cos84


The answer is 1.

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1 solution

Tom Engelsman
Apr 10, 2020

Correction: It should be cos 72 \cos72 instead of cos 2 \cos2 above.

Yeah that's what I thought

hi bye - 1 year, 2 months ago

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