3. Show that if A = 3a, + 2a, – a, B = 4a, – 8a, – 4a, and C = 7ax – 6a, – 5a,, then A, B and C form a right angle triangle.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.2: Length And Angle: The Dot Product
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3. Show that if А 3 За, + 2а, — а,, В %3D 4а, — 8а, — 4а, and С %3D7а, — 6а, — 5а,, then A, B and
C form a right angle triangle.
Transcribed Image Text:3. Show that if А 3 За, + 2а, — а,, В %3D 4а, — 8а, — 4а, and С %3D7а, — 6а, — 5а,, then A, B and C form a right angle triangle.
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