given $\displaystyle cos ^2 \frac {4k\pi\pm\pi}{12}$

how can i find the three distinct values of it beside putting k = 1,2,3,4,5..... to evaluate it's value to see they are the same or not?

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- May 19th 2008, 10:29 PMafeasfaerw23231233distinct value of
given $\displaystyle cos ^2 \frac {4k\pi\pm\pi}{12}$

how can i find the three distinct values of it beside putting k = 1,2,3,4,5..... to evaluate it's value to see they are the same or not? - May 19th 2008, 10:38 PMJhevon