Question

Q 1. If sin (A - B) = 1 2 and cos(A+B)= 1 2 , 0 0< A+B ≤ 90 , find A and B.

Answer 1

Answer:

if ur questions is sin (A-B)=1/2 and cos (A-B)=1/2

than solution is

sin (A-B)=1/2

sin (A-B)=sin30°

A-B=30° ---------(1)

cos (A-B)=1/2

cos (A-B)=cos60°

A-B=60°----------(2)

(2)+(1)=

2A=90°

A=45°

(2)-(1)=

2B=30°

B=15°