Working with Vectors (AQA A-Level Mathematics): Quizzes

Magnitude & direction

$A \cos \theta$

$(A_x+B_x)\hat{i}+(A_y+B_y)\hat{j}$

$\sqrt{A_x^2 + A_y^2}$

Counter clockwise from +ve $x$-axis

$|\vec{A}| |\vec{B}| \cos \theta$

A scalar quantity

$|\vec{A}| |\vec{B}| \sin \theta$

Resultant force is zero

Break into horizontal & vertical parts