In the diagram below, $AC$AC is a tangent to the circle with centre $O$O:
Solve for $x$x.
Show all working and reasoning.
In the diagram below, $RS$RS is a tangent to the circle with centre $O$O:
In the following diagram, $JL$JL is a tangent to the circle with centre $O$O:
Solve for $x$x in the diagram below: