If `sintheta+sin^(2)theta=1`, then prove that `cos^(12)theta+3cos^(10)theta+3cos^(8)theta+cos^(6)
Channel: Doubtnut
Date: 2020-01-28

If `sintheta+sin^(2)theta=1`, then prove that `cos^(12)theta+3cos^(10)theta+3cos^(8)theta+cos^(6)theta-1=0`