Answer
Since, the given angle is negative therefore, we will move clockwise from the x-axis as depicted in the figure:
Work Step by Step
Given: $-\frac{3\pi}{4}$ rad $=-135^{\circ}$
The standard position of an angle occurs when we place its vertex at the origin of a coordinate system and its initial side on positive x-axis.
A positive angle is obtained by rotating the initial side counterclockwise until it coincides with the terminal side. Likewise, negative angles are obtained by clockwise rotation
.
Since, the given angle is negative therefore, we will move clockwise from the x-axis as depicted in the figure: