If a quadrilateral sin(A+B/2)cos(A-B/2)+sin(C+D/2)cos(C-D/2)=2.find the value of sin(A/2)sin(B/2)sin(C/2)sin(D/2).

If a quadrilateral sin(A+B/2)cos(A-B/2)+sin(C+D/2)cos(C-D/2)=2.find th

1.	If a quadrilateral sin(A+B/2)cos(A-B/2)+sin(C+D/2)cos(C-D/2)=2.find the value of sin(A/2)sin(B/2)sin(C/2)sin(D/2).
Answer» If a quadrilateral sin(A+B/2)cos(A-B/2)+sin(C+D/2)cos(C-D/2)=2.find the value of sin(A/2)sin(B/2)sin(C/2)sin(D/2).