Draw a circle of radius 5 cm. Mark its centre as O and mark a point A on the circle. Join OA.
Draw a line at A perpendicular to radius OA.
Draw OB at such that ∠ AOB is 120∘ . [180 - 60 : Angle at centre and the angle between the two tangents are supplementary]
Draw a line at B perpendicular to radius OB. Let the perpendiculars at A and B meet at P.
PA and PB are the required tangents.
Here, ∠APB=60∘