2. Exemplar - Find the value

In figure, if \(PQR\) is the tangent to a circle at \(Q\) whose centre is \(O\), \(AB\) is a chord parallel to \(PR\) and \(\angle BQR = 63^\circ\). Estimate the value of \(\angle AQB\).

 

The value of \(\angle AQB\) is equal to __________\(^\circ\).