[" 8.In any quadrilateral "ABCD," then value of "],[sin(A+B)+sin(C+D)" is "]

In any quadrilateral ABCD, prove that: sin (A + B) + sin(C +D)=0 .

In any quadrilateral ABCD,prove that sin(A+B)+sin(C+D)=0

In any quadrilateral ABCD, prove that: i) sin(A+B)+sin(C+D)=0 ii) cos(A+D)-cos(B+C)=0

If A,B,C,D be the angles of a quadrilateral , what is the value of (sin(A+B))/(sin (C+D)) +(cos(C+D))/(cos (A+B))

In any triangle ABC, the value of (b^(2)sin 2C + c^(2) sin 2B) is-

If any quadrilateral ABCD, prove that "sin"(A+B)+sin(C+D)=0 "cos"(A+B)=cos(C+D)

If any quadrilateral ABCD, prove that "sin"(A+B)+sin(C+D)=0 "cos"(A+B)=cos(C+D)

If any quadrilateral ABCD, prove that "sin"(A+B)+sin(C+D)=0 "cos"(A+B)=cos(C+D)

If any quadrilateral ABCD, prove that "sin"(A+B)+sin(C+D)=0 "cos"(A+B)=cos(C+D)

In a cyclic quadrilateral ABCD, find the value of tanA/2tan B/2 tan C/2 tan D/2 .