p { margin-bottom: 0.25cm; line-height: 120%; }Prove that in a quadrilateral ABCD:-
cosA-cosB+cosC-cosD-4sin{(A+B)/2}cos{(A+C)/2}cos{(A+D)/2}=0
p { margin-bottom: 0.25cm; line-height: 120%; }
Prove that in a quadrilateral ABCD:-
cosA-cosB+cosC-cosD-4sin{(A+B)/2}cos{(A+C)/2}cos{(A+D)/2}=0
Subhajit Dhar , 8 Years ago
Grade 11
