Answer :

We know that

Two lines with direction ratios a1, b1, c1 and a2, b2, c2 are perpendicular if the angle between them is θ = 90°, i.e. a1a2 + b1b2 + c1c2 = 0


Also, here the direction ratios are:


a1 = 7, b1 = -5, c1 = 1 and a2 = 1, b2 = 2, c2 = 3


Now, Consider


a1a2 + b1b2 + c1c2 = 7 × 1 + (-5) × 2 + 1 × 3 = 7 -10 + 3 = - 3 + 3 = 0


The two lines are perpendicular to each other.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Find the value ofMathematics - Board Papers

Show that lines <Mathematics - Board Papers

Find the value ofMathematics - Board Papers

Find the value ofMathematics - Board Papers

Write the directiMathematics - Board Papers

<span lang="EN-USMathematics - Board Papers

<span lang="EN-USMathematics - Board Papers

What is the angleRS Aggarwal - Mathematics

Find the angle beRS Aggarwal - Mathematics