Math, asked by ne5ha8nakpofatia, 1 year ago

if cos(40 degrees+A)=sin 30 degrees the value of A is?

Answers

Answered by ariba2

1

cos (40degrees+A)=sin 30 degrees
cos(40degrees+A)=cos60degrees
comparing both sides
40 degrees+A=60degrees
A=(60-40 )degrees
A=20 degrees

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