Technical Drawing - Exam Papers - Higher - 1994 - Paper 1

Question 3

Fig. 2. shows the plan of a sphere A and a right cone B resting on the horizontal plane. The altitude of the cone is 80 mm.

(a) Draw the plan and elevation of the solids and show the projections of the smallest sphere which rests on the horizontal plane and touches the sphere A and the cone B

(b) Determine the traces of a tangent plane to the sphere A and the cone B and show the point of contact of the plane with sphere A.