A vector has two direction cosines and

MATHEMATICS · Subjective · CBSE · Mathematics · Three-Dimensional Geometry · Three-Dimensional Geometry

Problem

A vector has two direction cosines l=0.4l=0.4 and m=0.8m=0.8. If the vector is directed towards the half-space where zz is negative, determine its third direction cosine nn.

Related theory

Browse the problem library