Question

If sin (A+B) =1 and cos (A_B) =1, 0°< or =(A+B)< or =90°and A>B then find A and B.

Answer 1

Answer:

sin(a+b)=sin90°

a+b=90--------eq.1

cos(a-b)=cos0°

a-b=0-----------eq.2

from eq. 1 and 2

a= 45°

b=45°