Question

ABCD is a cyclic quadrilateral in which AC and BD are its diagonals.If ∠DBC = 750and ∠BAC = 500, find ∠BCD.

Answer 1

Given:ABCD is a cyclic quadrilateral in which AC and BD are its diagonals.If ∠DBC = 750and ∠BAC = 500, find ∠BCD.

Solution:

Angle BCD = 180-(70-30)

=180-100

=80°

Answer is 80°