Question

If 2cos(B+A)= 2sin(B-A)=1then B is
degree
Your answer​

Answer 1

Answer:

hope this will help you

45degree,15degree

Answer 2

Answer:

a=45° b=15°

2cos(A+B)=1

cos(A+B)=1/2

cos(A+B)=cos60∘

A+B=60∘.......... (1)

2sin(A−B)=1

sin(A−B)=1/2

sin(A−B)=sin30∘

A−B=30∘ ........ (2)

Adding (1) and (2),

2A=90∘

A=45∘

From (1),

B=60∘ −A

=60∘-45∘ =15∘