#### Question

Which of the following represents direction cosines of the line :

(a)`0,1/sqrt2,1/2`

(b)`0,-sqrt3/2,1/sqrt2`

(c)`0,sqrt3/2,1/2`

(d)`1/2,1/2,1/2`

#### Solution

**Ans. (C)**

`l^2+m^2+n^2`

`=(0)^2+(sqrt3/2)^2+(1/2)^2`

`=3/4+1/4=1`

Is there an error in this question or solution?

#### APPEARS IN

Solution Which of the Following Represents Direction Cosines Of The Line Concept: Direction Cosines and Direction Ratios of a Line.