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

Question

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

Vikas TU · Answer

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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

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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

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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