Wb Jee
Trigonometric Functions And Equations
WB JEE 2008
MCQ+1 / -0.252008
The value of \(\cos {\pi \over {15}}\cos {{2\pi } \over {15}}\cos {{4\pi } \over {15}}\cos {{8\pi } \over {15}}\) is
Wb Jee
WB JEE 2008
The value of \(\cos {\pi \over {15}}\cos {{2\pi } \over {15}}\cos {{4\pi } \over {15}}\cos {{8\pi } \over {15}}\) is