Question

Plz solve this question = What is the value of SinA+B/2 in triangle ABC??

Answer 1

suppose a triangle abc right angle at c. so anlge a + angle b = 90*
:. sin(a + b)/2 = sin c/2.
angle c is right angle which is 90
so sin c/2 = sin 90/2 = sin45= under root 2