CUET Preparation Today
Let \(l,m,n\) be the direction cosines of a line. Then which of the following relation is there |
\(l^2+m^2+n^2=1\) \(l^2+m^2+n^2=2\) \(l^2+m^2+n^2\) can be any natural number \(l^2+m^2+n^2\) is an irrational number |
\(l^2+m^2+n^2=1\) |
Recall \(l^2+m^2+n^2=1\) |
