Practice variation 1 of 3
Vectors — Pythagoras wording
Your question
Explain the same result using a right triangle formed by , its projection , and on the line of .
This practice question was inspired by Question 14(b) in the 2022 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.
Before you check
- Have you stated every choice or assumption?
- Can another student follow each line?
- Did you verify the final result independently?