Question

if sin (A - B ) =1/2 or cos (A + B ) = 1/2 , 0° < A + B < 90° , find A and B ?​

Answer 1

Answer:

sin(a-B)=sin 30°. or cos(a+B)= cos 60°

now,a-B=30°________( 1)

and, a+B= 60°________(2)

Step-by-step explanation:

according to equation first and second

=. 2a=90°

a= 45°

now fill the value of (a) is putting in equation first

=. a-B=30°

45°-B=30°

B=15°