Problem

Find the direction cosines and direction angles o…

01:03

Problem 35 Easy Difficulty

Find the direction cosines and direction angles of the vector. (Give the direction angles correct to the nearest degree.)

$ i - 2j - 3k $

Answer

$$1 / \sqrt{14},-2 / \sqrt{14},-3 / \sqrt{14} ; 74^{\circ}, 122^{\circ}, 143^{\circ}$$

Topics

Vectors

Calculus: Early Transcendentals

Chapter 12

Vectors and the Geometry of Space

Section 3

The Dot Product

Discussion

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Video Transcript

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