A vector has components and .

MATHEMATICS · Multi-part · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

A vector has components

A_x=9\,\text{units}

and

A_y=-12\,\text{units}

. (i) Calculate the unit vector along

\mathbf{A}

. (ii) Determine the angle made by

\mathbf{A}

with the positive x–axis (answer in degrees,

0^\circ\le \theta<360^\circ