TS EAMCET · Maths · Three Dimensional Geometry
If the direction ratio of two lines are given by \(l+m+n=0, m n-2 l n+l m=0, \quad\) then the angle between the lines is
- A \(\frac{\pi}{4}\)
- B \(\frac{\pi}{3}\)
- C \(\frac{\pi}{2}\)
- D \(0\)
Answer & Solution
Correct Answer
(C) \(\frac{\pi}{2}\)
Step-by-step Solution
Detailed explanation
Given lines are l + m + n = 0 ...(i) and mn - 2ln + lm = 0 ...(ii) From equation (i) \( l=-(m+n) \) Putting in equation (ii), we get…
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