Math, asked by abhi6955, 1 year ago

cos28.cos32-sin28.sin32
plz answer my question!!!

shrustiammu: answer is o

abhi6955: no

Answers

Answered by amulya2000

11

Using the formulae-

CosA.CosB-SinASinB=Cos(A+B)

Here A=28°,B=32°

then, Cos(A+B)=Cos(28°+32°)

Cos60°

=1/2

Answered by yeshwitha2921

2

formula is cos (a+b) =cosa.cosb-sina.sinb

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