11 HL: The Sine Rule

Complete the following questions before our next class.

Exercise 9A questions 1a, 3, 5, 10, 13b, 14
Exercise 9C.1 questions 1ab, 3a, 5

11 HL: Intersecting Planes

While we’ve looked at finding the line of intersection of two planes, finding the point (or line) of intersection of three planes is actually no more difficult, so some of the questions below involve finding points (or lines) of intersection of three planes. Try to visualize the situation, and you may find GeoGebra helpful in approaching some of these questions.

Note that some of these questions instruct you to use elementary row operations (so, a matrix-based approach). I’m happy for you to use any (non-calculator) approach you like to answer these.

Exercise 13I question 1bc, 4abd, 5b, 8

11 HL: Vector and Cartesian Equations of Planes

Try the (challenge) question below before our next class. For an extra challenge, can you post your solution below using \(\LaTeX\)? (See here for a quick tutorial.)

Find a vector equation of the plane whose Cartesian equation is \(2x+y-z=4\).

Hint 1
Can you find three points that lie on the plane? Those three points might be useful…
Hint 2
Those three points can be used to find two useful vectors…

11 HL: Planes and Normals

Complete the questions in the PDF file attached before next class. (Questions 1 b) and 3 a) are challenge questions, but you might be able to figure these out using the material we’ve covered in the past few lessons… see the hint below.)

Hints
A line with just the right direction, in just the right location, might intersect the plane in just the right point…

11 HL: Lines & Planes

Complete the following question before our next class.

Find the point of intersection of the line \( \frac{x-2}{5}=\frac{y+2}{2}=\frac{z-1}{3}\) and the plane \(2x-3y+z=0\).

11 HL: The Cross Product

Complete the following questions before our next class.

Exercise 12N.1 questions 1, 4, 8, 10
Exercise 12N.2 questions 3, 4, 5
Exercise 12N.3 questions 2, 5