cos-2n-1-cos-2-2n-1-cos-3-2n-1-cos-n-2n-1-1-2-n-prove-

Tinku Tara June 3, 2023 Trigonometry 0 Comments

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Question Number 143063 by ERA last updated on 09/Jun/21

cos((𝛑/(2n+1)))cos(((2𝛑)/(2n+1)))cos(((3𝛑)/(2n+1))).....cos(((n𝛑)/(2n+1)))=(1/2^n ) prove

\cos (\frac{π}{2 n + 1}) \cos (\frac{2 π}{2 n + 1}) \cos (\frac{3 π}{2 n + 1}) \dots . . \cos (\frac{n π}{2 n + 1}) = \frac{1}{2^{n}}

prove

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