If `ABCD` is a cyclic quadrilateral, the value of `(tan)A/2 (tan)C/2+(tan)B/2 (tan)D/2` is

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

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

ABCD is a cyclic quadrilateral and tan (A/2) tan (C/2) + tan (B/2) tan (D/2) equals_____

(tan(B/2)-tan(C/2))/(tan(B/2)+tan(C/2))

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 ABCD is a cyclic quadrilateral such that 12 tan A-5=0 and 5cos B+3=0 then the quadratic equation whose roots are cos C and tan D is

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

Write True or False In cyclic quadrilateral ABCD, tan (A/2).tan(C/2)=1

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) =