A vector has direction ratios .

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

Problem

A vector

\vec{a}

has direction ratios

2, -3, 6

. (i) Obtain the unit vector in the direction of

\vec{a}

. (ii) Find the angles that

\vec{a}

makes with the three coordinate axes, correct to the nearest degree.