The vectors and lie in the -plane

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

The vectors

\vec A = 4\,\hat i + 3\,\hat j

and

\vec B = -2\,\hat i + 7\,\hat j

lie in the

xy

-plane. Calculate the angle between

\vec A

and

\vec B

in degrees (round to the nearest whole number).