In the diagram, < ROS = 66^o and < POQ = 3x. some construction lines are shown. Calculate the value of x.

In the diagram, the tangent MN makes an angle of 55^o with the chord PS. IF O is the centre of the circle, find < RPS

In the diagram, O is the centre of the circle, < SQR = 60^o, < SPR = y and < SOR = 3x. Find the value of (x + y)

The shaded portion in the diagram is the solution of

In the diagram, GI is a tangent to the circle at H. If EF//GI, calculate the size of < EHF