The angle between the lines whose direction cosine are connected by the relations `l –5m+3n=0` and `7 l^2 + 5m^2 – 3

Ask a Question


Question Asked by a Student from EXXAMM.com Team


Q 2271267126.     The angle between the lines whose direction cosine are connected by the relations `l –5m+3n=0` and `7 l^2 + 5m^2 – 3n^2 = 0`
A

`tan^(-1)(2/ sqrt3)`

B

`cos^(-1)sqrt(7/(12))`

C

`cos^(-1)sqrt(3/7)`

D

`tan^(-1)(5/7)`

HINT


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