In a cyclic quadrilateral ABCD, the value of `2+sum cos A soc B,` is

In a cyclic quadrilateral ABCD, the value of 2+sum cos A cos B, is

A,B,C,D are the angles of a cyclic quardrilateral ABCD , what is the value of cos A+cos B + cos C + cos D ?

In a cyclic quadrilateral ABCD /_A=4x, /_C=2x the value of x is

If ABCD is a cyclic quadrilateral,then the value of cos A-cos B+cos C-cos D is

If ABCD is a cyclic quadrilateral then the value of cosA+cosB+cos C+cos D is

If ABCD is a cyclic quadrilateral, then the value of cos A - cos B + cos C - cos D =

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

If angle A = 100^@ of a cyclic quadrilateral ABCD, then the value of angle C is _____

if ABCD is a cyclic quadrilateral, then find the value of cosA cosB - cos C cos D.

If ABCD is a cyclic quadrilateral, then the value of cosA-cosB+cosC-cosD is equal to