Show that the straight lines whose direction cosines are given by the equations al + bm + cn = 0 and ul+ vm²+wn = 0 are parallel or perpendicular as 2²6² 2² — + - + = = 0ora²(v + w) + b²(w + u) + c²(u + v) = 0. U V W

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 21E
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Show that the straight lines whose direction cosines are given by the equations al + bm + cn = 0 and
ul+ vm² + wn² = 0 are parallel or perpendicular as
2² 1² ²
-+-+-= 0ora²(v + w) + b²(w + u) + c² (u + v) = 0.
V
W
U
Transcribed Image Text:Show that the straight lines whose direction cosines are given by the equations al + bm + cn = 0 and ul+ vm² + wn² = 0 are parallel or perpendicular as 2² 1² ² -+-+-= 0ora²(v + w) + b²(w + u) + c² (u + v) = 0. V W U
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