Vector Math (Part 2)

Level 2

The Grid now has 2 vectors A and B , where

A = 6i-2j+2k

B = 3i-j+k

What is the angle between the two vectors?


The answer is 0.

Raghav Dua by Raghav Dua , 25, India

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4 solutions

Raghav Dua
Jan 20, 2014

We recognize the fact that A || B (A is parallel to B) because A = 2B

Multiplying one vector by a constant yields another vector, thus they are parallel.

Hence, angle between them is 0

7 Helpful 1 Interesting 0 Brilliant 0 Confused
Aloysius Ng
Dec 11, 2014

In the case the method mentioned by Raghav Dua doesn't work, like if it isnt parallel, this longer method works.

The cosine of the angle = dot product of both vectors / product of both vectors.

So the cosine of the angle = 22/22 = 1

So the angle is 0.

2 Helpful 0 Interesting 0 Brilliant 0 Confused
Swapnil Das
Apr 26, 2015

Please rate this problem.

0 Helpful 1 Interesting 0 Brilliant 0 Confused
Amlan Sahu
Oct 23, 2015

this is a simple application of the dot products of two given vectors.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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