Sinx + sin2x=sin3x = 1
cos6x - 4cos4x - 8cos2 =
Explain also please
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2 Answers
Mani Pal Singh
·2009-06-28 03:04:33
=sin3x = 1
cos6x - 4cos4x - 8cos2x =
sin3x=1 in case only when x=n pi/2
and so it cannot be equal to Sinx + sin2x
recheck ur ques!
Dr.House
·2009-06-28 07:48:19
the correct question should be
Sinx + sin2x+sin3x = 1
cos6x - 4cos4x - 8cos2x = ?