Question

prove that 2(sinprove that two bracket sin to the power 6 A + cos to the power 6 a bracket close - 3 bracket sin to the power 4 + cos to the power 4 bracket close + 1 is equal to zero ​

Answer 1

Hope it may help you....

Answer 2

hey mate here is ur ans pls mark it brainliest

2(sin⁶θ+cos⁶θ)-3(sin⁴θ+cos⁴θ)+1

= 2{(sin²θ)³+(cos²θ)³}-3{(sin²θ)²+(cos²θ)²}+1

= 2{(sin²θ+cos²θ)³-3sin²θcos²θ(sin²θ+cos²θ)}-3{(sin²θ+cos²θ)²-2sin²θcos²θ}+1

=2(1-3sin²θcos²θ)-3(1-2sin²θcos²θ)+1

=2-6sin²θcos²θ-3+6sin²θcos²θ+1

=-1+1

=0 (Proved)