The Scalar Product (AQA A-Level Further Maths): Quizzes

A scalar

$|\mathbf{a}||\mathbf{b}|\cos\theta$

$0$

$0$

They are perpendicular

Distributive property

Yes, $\mathbf{a} \cdot \mathbf{b} = \mathbf{b} \cdot \mathbf{a}$

$\cos\theta = \frac{\mathbf{a} \cdot \mathbf{b}}{|\mathbf{a}||\mathbf{b}|}$

Subtract the acute angle from 180°

$3$