2020HSCMultiple choice

Q1

1 mark

Question

What is the length of the vector $-\mathbf{i}+18\mathbf{j}-6\mathbf{k}$ ?

A. $5$
B. $19$
C. $25$
D. $361$

Try the question before revealing the answer.

Syllabus alignment

Vectors

Introduction to three-dimensional vectorsRepresent and operate with vectors in three dimensions using unit, component, ordered-triple and column-vector forms.

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