Let â = î + 4j – k and b = -i+ 21 - 2k. Find: (i) the magnitude |6|. (ii) the dot product â - b. (iii) the angle between â and b in terms of n.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section: Chapter Questions
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(a)
Let â = i + 4j – k and b = -i+ 2j - 2k. Find:
%3D
(i)
the magnitude |6|.
(ii)
the dot product â · b.
(iii)
the angle between â and b in terms of t.
Transcribed Image Text:(a) Let â = i + 4j – k and b = -i+ 2j - 2k. Find: %3D (i) the magnitude |6|. (ii) the dot product â · b. (iii) the angle between â and b in terms of t.
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a^=i^+4j^-k^ and b^=-i^+2j^-2k^

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