1. Draw a line segment AB of length 8 cm.
2. Taking A as centre, draw a circle of radius 4 cm.
3. Taking B as centre, draw another circle of radius 3 cm.
4. Let Z be the mid-point of AB. From Z, draw a circle taking ZA = ZB as radius, so that the circle intersects the bigger circle at M and N and smaller circle at X and Y respectively.
5. Join AX, AY and BM, BN.
∴ BM, BN are the required tangents from the external point B and AX, AY are the required tangents from the external point A.
Rate this question :