Question

if cos (A_B)=root3/2=sin(A+B) find AAndB​

Answer 1

Cos(A-B)=root3/2= 30 degrees , A-B = 30 degrees, A= B + 30. (Putting this value in the next equation)

Sin(A+B)=root3/2= 60 degrees , A+ B = 60 degrees, (B + 30)+B=60

2B+30=60

2B=60-30

2B=30

B=30/2

B=15

It is given that A+B=60

So 15 +A=60

A=60-15

A=45

Hence found!!!

Enjoy brother