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Home  >>  CBSE XI  >>  Math  >>  Trigonometric Functions

True-or-False :$\cos \large\frac{2\pi}{15}$$\cos \large\frac{4\pi}{15}$$\cos \large\frac{8\pi}{15}$$\cos \large\frac{16\pi}{15}=\frac{1}{16}$

$\begin{array}{1 1}(A)\;\text{True}\\(B)\;\text{False}\end{array} $

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