Math, asked by hmo0oud, 10 months ago

Rewrite the expression Cos45cos30+sin45sin30

Answers

Answered by jayantypradan

2

Answer:

Your answer is here.

cos45 cos30 + sin45 sin30

= 1/√2×√3/2 + 1/√2×1/2

= (√3+1)/2√2

Answered by choutapallysathvik3

1

Answer:

Cos45Cos30+Sin45Sin30=

we know,

CosACosB+SinASinB=Cos(A-B) Here,A=45,B30

so,Cos45Cos30+Sin45Sin30=Cos(45-30)

=Cos20

Therefore,Cos45Cos30+Sin45Sin30=Cos20

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