23. Given the points u = (2, 1, − 3), v = - ( 4, 5, 1), and w = (5, — 1, − 4). ← ← → a) Are the vectors u, v and w coplanar? Show your answer algebraically. b) Find the angle between u and w .

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 9E
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23. Given the points u = (2, 1, − 3), v =
-
( 4, 5, 1), and w = (5, — 1, − 4).
← ←
→
a) Are the vectors u, v and w coplanar? Show your answer algebraically.
Transcribed Image Text:23. Given the points u = (2, 1, − 3), v = - ( 4, 5, 1), and w = (5, — 1, − 4). ← ← → a) Are the vectors u, v and w coplanar? Show your answer algebraically.
b) Find the angle between u and w .
Transcribed Image Text:b) Find the angle between u and w .
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