(a) Draw an ellipse with a major axis of 140mm and a minor axis 90mm.
Draw a tangent to the ellipse at a point 55mm from the centre of the curve.
(b) Fig. 6 shows the directrix DD1, axis and vertex V
of a hyperbola.
The eccentricity of the curve is 4/3.
Locate the focus of the hyperbola and draw a
portion of the curve.