Class 12

Math

3D Geometry

Three Dimensional Geometry

The Cartesian equations of a line are $2x−1 =3y+2 =−1z−5 $. Its vector equation is

- $r=(−i^+2j^ −5k^)+λ(2i^+3j^ −k^)$
- $r=(2i^+3j^ −k^)+λ(i^−2j^ +5k^)$
- $r=(i^−2j^ +5k^)+λ(2i^+3j^ −k^)$
- none of these

**Correct Answer: ** Option(c)