Saved Bookmarks
| 1. |
In any Quadrilater find value of sin (A+B) + sin (C+D) |
| Answer» In quadrilateral, A+B+C+D=360 A+B=360-(C+D) sin(A+B)=sin{360-(C+D)} sin(A+B)= -sin(C+D) sin(A+B)+sin(C+D)=0 Ans. | |