Question

21. If sin (A + B) = 1 and sin (A - B) =1/2
OSA+B -90° and A > B, then find A and
B.
[CBSE 2016]​

Answer 1

Step-by-step explanation:

sin(A+B)=1

sin(A+B)=sin90

A+B=90

A=90-B.........(1)

sin(A-B)=1/2

sin(A-B)=sin30

A-B=30

90-B-B=30

-2B=-60

B=30

(1) A=90-30

A=60