In given figure, \(PQ\) is a chord of a circle and \(PT\) is the tangent at \(P\) such that \(QPT = 79^\circ\). Obtain the measure of \(\angle PRQ\)? 
YCIND_240308_6083_circles_4.png
 
The measure of \(\angle PRQ = \)________\(^\circ\).