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se vectors to determine whether the triangle with vertices A = (1,–3,–2), = (6,–2, -5) is right-angled. %3D

se vectors to determine whether the triangle with vertices A = (1,–3,–2), = (6,–2, -5) is right-angled. %3D

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 15E
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TLER tic Use vectors to determine whether the triangle with vertices A = (1,–3,–2). B = (2,0, –4), C = (6,–2,–5) is right-angled. diagonal of a cube and a diagonal of one of
Transcribed Image Text:TLER tic Use vectors to determine whether the triangle with vertices A = (1,–3,–2). B = (2,0, –4), C = (6,–2,–5) is right-angled. diagonal of a cube and a diagonal of one of
Expert Solution
Step 1

we know that if the dot product of two vectors is zero then the two vectors are perpendicular.

therefore, 

if the dot product of two sides of a triangle equals to zero, then the triangle is right angled triangle.

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