please solve this for me.
please solve this correct and right answer will be awarded with brainlist answer or verified answer so, give ur best.
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chirag477:
can u please explain me how u get this answer
yes
cos(6x)=cos3(2x)
use formula of cos(3x) where in place of x use 2x
cos3x=4cos^3x-3cosx
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so,
the L.H.S = R.H.S.....
..................
the L.H.S = R.H.S.....
..................
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