Grade 10Algebra
If sinx+ sin^2x=1 find the Value of cos^12x + 3cos^8x + cos^6x + 2 cos^4x +2cos^2x-2
If sinx+ sin^2x=1 find the Value of cos^12x + 3cos^8x + cos^6x + 2 cos^4x +2cos^2x-2
1 Answer
Deepak Kumar Shringi
put sinx=1-sin2x
sinx=cos2x
do square both side and then replace
sinx=cos2x
do square both side and then replace
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