Question

sin A+cos B=1,A=30 and B is an vertices of isosles triangle​

Answer 1

If in a triangle ABC, cosAcosB+sinAsinBsinC=1 , then the triangle is. A ... Therefore, △ABC is right angled isosceles triangle.

Answer 2

Answer:

SinA+CosB=1

A=30

Sin 30=1/2

sin 30=cos 30

1/2+1/2=1

1=1

Therefore , value of B=60