Question

answer please it's urgent​

Answer 1

Answer:

A-B=30°(SINCE SIN30°=1/2)

A+B=60°(since SIN60°=1/2)

Equating above two equation we get

A=45°

B=45°

Answer 2

Explanation:

sin(a-b)=1/2

(a-b)=sin^-1(1/2)

(a-b)=30

cos(a+b)=1/2

a+b=60

adding both we get

a-b+a+b=90

2a=90

a=45

putting the value of a in the above equation

a+b=60

45+b=60

b=15