Find the d . c. s of a vector whose direction ratios are `2 , 3 , -6`.

Ask a Question


Question Asked by a Student from EXXAMM.com Team


Q 1481578427.     Find the d . c. s of a vector whose direction ratios are `2 , 3 , -6`.
A

`frac{2}{7}, frac{-3}{7}, frac{-6}{7}`

B

` frac{2}{7}, frac{-3}{7}, frac{6}{7}`

C

`frac{-2}{7}, frac{3}{7}, frac{6}{7}`

D

`frac{2}{7}, frac{3}{7}, frac{-6}{7}`

HINT

The d.c.s of a vector with d.r.s (a,b,c) are `frac{a}{ sqrt{a^2+b^2+c^2}}, frac{b}{ sqrt{a^2+b^2+c^2}}, frac{c}{ sqrt{a^2+b^2+c^2}}`

Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

Find instant solution to any question from our database of 1.5 Lakh + Questions

 


Access free resources including

  • 100% free video lectures with detailed notes and examples
  • Previous Year Papers
  • Mock Tests
  • Practices question categorized in topics and 4 levels with detailed solutions
  • Syllabus & Pattern Analysis

Engineering


Medical


Banking


DEFENCE


SSC


RRB


CBSE-NCERT


OLYMPIAD