Further Mathematics
Three-dimensional vector geometry
- 1.
Find the angle between the normals to planes x + 2y + 2z = 4 and 2x + y - 2z = 1.
[3 marks] · no calculator - 2.
Find where r = (1,0,2) + t(2,1,-1) meets x + y + z = 7.
[3 marks] · no calculator - 3.
Find a Cartesian equation of the plane through A = (1,0,0), B = (0,1,0), C = (0,0,2).
[3 marks] · no calculator - 4.
Find the perpendicular foot from P = (3,2,1) to plane x + 2y + 2z = 0, and the distance.
[3 marks] · no calculator - 5.
Lines L1: r = (0,0,0) + s(1,0,0) and L2: r = (0,1,1) + t(0,1,0). Show they are skew and find their shortest distance and closest points.
[3 marks] · no calculator - 6.
Find a vector equation of the intersection of x + y + z = 3 and x - y + z = 1. Find the point on that line nearest the origin.
[3 marks] · no calculator
Marking points are indicative, not an official mark scheme. Accept equivalent valid methods and supported interpretations that address the task; award each mark once without requiring the model wording.