Math, asked by jash79, 6 months ago

Evaluate cos^2 46 + cos^2 44​

Answers

Answered by NasDaily
0

Cos double angle formula:

cos

2

θ

=

cos

2

θ

sin

2

θ

So in this case let  

θ

be  

44

degrees

cos

2

(

44

°

)

sin

2

(

44

°

)

=

cos

(

2

44

°

)

=

cos

(

88

°

)

Answer linkCos double angle formula:

cos

2

θ

=

cos

2

θ

sin

2

θ

So in this case let  

θ

be  

44

degrees

cos

2

(

44

°

)

sin

2

(

44

°

)

=

cos

(

2

44

°

)

=

cos

(

88

°

)

Answered by krishag08
2

Answer:

cos²46+cos²44= cos²(90-44)+cos²44

=sin²44+cos²44= 1(Ans)

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