Math, asked by anuragkumar9446, 3 months ago

cos^6 + cos^4 + cos^2 = 4

Answers

Answered by subhsamavartj

2

Answer:

4cos6θcos4θcos2θ

=2cos6θ(2cos4θcos2θ)

=2cos6θ(cos(4θ+2θ)+cos(4θ−2θ))

=2cos6θ(cos(6θ)+cos2θ)

=2cos

2

6θ+2cos6θcos2θ

=1+cos12θ+cos(6θ+2θ)+cos(6θ−2θ)

=cos12θ+cos8θ+cos4θ+1

Step-by-step explanation:

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