The area of a cyclic quadrilateral having lengths 13,14,3,13 is (approximately).
If ABCD is a cyclic quadrilateral, then x = ___.
In the given figure, ABCD and ABEF are two cyclic quadrilateral. If ∠BCD=110∘ then ∠BEF=?
(a) 55∘
(b) 70∘
(c) 90∘
(d) 110∘
ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If ∠DBC=70∘ and ∠BAC=30∘, then ∠BCD= ___.