Math, asked by aymanmshaik, 5 months ago

3(sinθ - cosθ)^4+6(sinθ+cosθ)^2+4(sin^6+cos^6)=13​

Answers

Answered by RitikaMahapatra1234
1

Answer:

3(cosθ−sinθ)

4+6(sinθ+cosθ)

2+4sin

6

θ

=(cos

2

θ+sin

2

θ−2sinθ+cosθ)

2

+(sin

2

θ+cos

2

θ+2sinθcosθ)+4sin

6

θ

=(1−2sinθcosθ)

2

+(1+2sinθcosθ)+4sin

6

θ

=1+4sin

2

θcos

2

θ−4sinθcosθ+1+2sinθcosθ+4sin

6

θ

=9+12cos

θ

.sin

2

θ+4−12sin

2

θcos

2

θ+4cos

6

θ

=13−4cos

6

θ

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