Question

sin (a+b) and sin (a-b) = 1/2,0< or = a+b < or = 90°. Find A and B

Answer 1

Hey friends ...

Sin(A+B)=1

Sin(A+B)=Sin90°

A+B=90°--------------1)

And..Sin(A-B)=1/2

Sin(A-B)=Sin30°

A-B=30°------------2)

Now adding 1 ) and 2 )

we get..

A+B=90°
A-B=30°
-----------
2A=120°

A=60°

And..now if we putting the value A=60° on equation 1 ) we get..

A+B=90°

60°+B=90°

B=30°.

Hope it helps you..

@Rajukumar111

Answer 2

Answer:

A=60° andddd B=30° ........