Question

if sin (a-b)=1/2 ,cos(a+b)=1/2,0degree<a+b<90 degrees,a>b find a and b
since sin (A-B) = 1/2 therefore A-B -30° (why)​

Answer 1

Answer:

a=45 b=15

Step-by-step explanation:

sin30=1/2 and cos60=1/2

therefore,

a-b=30

a+b=60

2a=90

a=45

b=15