2D Vectors: Magnitude and Angles

A $2\text{D}$ vector can also be described using its magnitude (length) and angle (direction).

Consider a displacement vector $\vec{d}$ with:

• Magnitude: $|\vec{d}| = 5.0$ (the length of the vector)
• Angle: $\theta = 37°$ (measured counterclockwise from the positive $x$-axis)

We write this as: $\vec{d} = 5.0$ at $37°$