Question

Draw the circle with centre C and radius $3.5$cm. Point B is at a distance $7$cm from the centre. Draw tangents to the circle from the point B.

Answer 1

1. Take center $C$.
2. Draw circle of radius $3.5cm$.
3. Extend $CA$ till $CB$ where $CB=7cm$.
4. Take distance more than half in compass and mark two arcs from the ends of the line $CB$.
5. Now draw two more arcs above and below the line keeping the compass on these arcs.

Thus the required tangents $BP,BQ$ to the circle from the point $B$ is shown below