19. Five marks exercise problems I

1. In a circle, \(AB\) and \(CD\) are two parallel chords with centre \(O\) and radius \(10\) \(cm\) such that \(AB = 16 \ cm\) and \(CD = 12 \ cm\). Determine the distance between the two chords.

 

The distance between two chords \(=\)  \(cm\)

 

 

2. In the given figure, \(\angle CAB = 25^\circ\), find \(\angle BDC\), \(\angle DBA\) and \(\angle COB\).

 

 

\(\angle BDC\) \(=\) \(^\circ\)

 

\(\angle DBA\) \(=\) \(^\circ\)

 

\(\angle COB\) \(=\) \(^\circ\)