Explain why simply taking may give the wrong directional angle for a vector when…

MATHEMATICS · Subjective · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

Explain why simply taking arctan⁡(vyvx)\arctan\left(\dfrac{v_y}{v_x}\right) may give the wrong directional angle for a vector when either vxv_x or vyv_y is negative.

Related theory

Browse the problem library