Question

lf cos (A+B) =1/2=sin (A-B), find the values of A and B.​

Answer 1

Answer:

Solution :-

cos(A+B)=1/2=cos 60=equation 1

sin(A-B)=1/2=sin 30=equation 2

by adding eqn 1 and 2,we get

A+B+A-B=60+30

2A=90

A=90/2=45

acc to eqn 1 A+B=60

THEN,B=60-A=60-45=15

HENCE,A=45,B=15

Hence proved ✧◝(⁰▿⁰)◜✧

Thanks