HSC Arts 12th Board ExamMaharashtra State Board
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Which of the Following Represents Direction Cosines Of The Line - HSC Arts 12th Board Exam - Mathematics and Statistics

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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

 2013-2014 (March) (with solutions)
Question 1.1.1 | 2.00 marks
Solution Which of the Following Represents Direction Cosines Of The Line Concept: Direction Cosines and Direction Ratios of a Line.
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