15. Five marks example problems II

In the given figure, \(AC\) is the diameter of the circle with centre \(O\). If \(\angle ADE = 30^\circ\); \(\angle DAC = 35^\circ\) and \(\angle CAB = 40^\circ\).

 

 

Find:

 

(i) \(\angle ACD\) \(=\) \(^\circ\)

 

(ii) \(\angle ACB\) \(=\) \(^\circ\)

 

(iii) \(\angle DAE\) \(=\) \(^\circ\)