JEE Main 2018 — Vector Algebra Question with Solution
JEE Main 2018 (15 Apr Shift 2 Online)
Question
An angle between the lines whose direction cosines are given by the equations, 0 and , is
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Given
From eq. (1) we have
Put the value of in eq. (2), we get;
Therefore, angle between the lines is given as:
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This is a previous-year question from JEE Main 2018, covering the Vector Algebra chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.