we know that
could I say that ?
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Originally Posted by doomgaze we know that
could I say that ? Difinetly you can say so.
Originally Posted by sa-ri-ga-ma Difinetly you can say so. I guess more importantly is it correct?
Originally Posted by doomgaze I guess more importantly is it correct? If 3x= t
cos(2t) = 2cos^2(t) - 1
so 2cos^2(t) = 1+cos(2t)
cos^2(t) = 1/2(1+cos(2t))
replace t by 3x and find the result.
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