The sum of two forces and is such that

MATHEMATICS · Subjective · A Level · Mathematics · Vectors · Vectors

Problem

The sum of two forces

\vec{p}

and

\vec{q}

\vec{R}

such that

|\vec{R}| = |\vec{p}|

. The angle

\theta

(in degrees) that the resultant of

2\vec{p}

and

\vec{q}

will make with

\vec{q}

is _____.