   Chapter 11.3, Problem 21E

Chapter
Section
Textbook Problem

# Comparing VectorsIn Exercises 21–26, determine whether u and v are orthogonal, parallel, or neither. u = j + 6 k v = i − 2 j − k

To determine
Whether the vectors u=j+6and v=i2jk are orthogonal, parallel or neither.

Explanation

The angle between the vectors u and v is need to be determine to know, whether the vectors are orthogonal or parallel;

uv=uvcosθcosθ=uvuvθ=arccos(uvuv)

Where the vector u=uu and v=vv and θ is the angle between the vectors uand v

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