draw a pair of tangents to a circle of radius 4cm which are inclined to each other at an angle of 60 degree.

1-Draw A Circle.

2-Draw A Radius from Centre O to an Point on Circumference of Cirlce as A,and Join OA.

3-Draw another Radius OB by making an 120 deg. between OA OB using protractor.4-Draw A prependicular on A B pt on Circle.Extend these Prependiculars they will meet at a pt P with Angle 60 deg. Between Them.

Thus,PA PB are the Reqd. Tangents!