CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper

Question : 22 of 29

Marks: +1, -0

{i}↖{\^}+{j}↖{\^}+{k}↖{\^}, 2 {i}↖{\^}+5 {j}↖{\^}, 3 {i}↖{\^}+2 {j}↖{\^}-3 {k}↖{\^}

and

{i}↖{\^}-6 {j}↖{\^}-{k}↖{\^}

respectively are the position vectors of points

A, B, C

and

D

, then find the angle between the straight lines

A B

and CD. Find whether

{A B}↖{→}

and

{C D}↖{→}

are collinear or not.

Solution:

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