Question 74
The lines containing the chords $AC$ and $BD$ of a circle with radius $1$ intersect at an angle of $45^\circ$. The length of the chord $AB$ equals $1$ (see figure).

What is the size of the angle $\angle CBD$?
(A) $45^\circ$
(B) $60^\circ$
(C) $65^\circ$
(D) $75^\circ$
(E) $85^\circ$

What is the size of the angle $\angle CBD$?
(A) $45^\circ$
(B) $60^\circ$
(C) $65^\circ$
(D) $75^\circ$
(E) $85^\circ$