If A,B,C and D are angles of quadrilateral and `sin(A)/(2)sin(B)
Channel: Doubtnut
Date: 28/01/2020

If A,B,C and D are angles of quadrilateral and `sin(A)/(2)sin(B)/(2)sin(C)/(2)sin(D)/(2)=(1)/(4)`, prove that A=B=C=D=`pi//2`