Let ABCD is a quadrilateral such that `A+B=pi,` if `tan A+tan B+tan C+tan D=M,` then `2M` is

If ABCD is a quadrilateral then tan((A+B)/(4))

(a) tan A+tan B+tan C=tan A tan B tan C

If ABCD is a cydic quadrilateral such that 12 tan A - 5 = 0 and 5 cos B + 3 = 0, then cos C tan D =

If ABCD is a cyclic quadrilateral, then tan A +tan C =_________.

If tan A+tan B+tan C=tan A . tan B . tan then

If A, B, C, D are the four angle taken in order of a cyclic quadrilateral, prove that (i) tan A + tan B + tan C + tan D = 0

If A+B+C=pi , then, find tan A + tan B + tan C

If A+B+C=pi , then, find tan A + tan B + tan C

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

If A, B, C, D be the angle of a quadrilateral, then (tan A + tan B + tan C + tan D)/( cot A + cot B + cot C + cot D) =