Question 2. Let ū = 31 – k, i = -ỉ - 3+ 2k. %3D (a) Find unit vectors in the direction of ū and ū. (b) Calculate the dot product of ū and ī. (c) Find the vector product of ū and ī.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 31E
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Question 2.
Let ū = 37 – k, i = -i – 3+ 2k.
(a) Find unit vectors in the direction of ū and v.
(b) Calculate the dot product of ū and ū.
(c) Find the vector product of u and i.
Transcribed Image Text:Question 2. Let ū = 37 – k, i = -i – 3+ 2k. (a) Find unit vectors in the direction of ū and v. (b) Calculate the dot product of ū and ū. (c) Find the vector product of u and i.
Question 1.
(a) Find the magnitude of the vector w = 4i +3 – 5k.
(b) Find the direction cosines of the vector w = 2i+j – 3k.
(c) Calculate ū+õ– 2uw, if ū = 21–25–k, ð = 4i+3–k and w = i-25+k.
Transcribed Image Text:Question 1. (a) Find the magnitude of the vector w = 4i +3 – 5k. (b) Find the direction cosines of the vector w = 2i+j – 3k. (c) Calculate ū+õ– 2uw, if ū = 21–25–k, ð = 4i+3–k and w = i-25+k.
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