Math, asked by ravneet4504, 1 year ago

किमती काढा: cos 60°×cos30° + sin 60°×sin 30°

Answers

Answered by Anonymous

4

Cos60°Cos30° + Sin60°Sin30°

Its something like,

Cos(a - b) = CosaCosb + SinaSinb

Cos(60 - 30)

= Cos30°

=> √3/2

Hope it helps u

Answered by nvpraba1981

1

cos60×cos60+sin60×sin60=1

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