Determine whether the triangle with vertices P(1, 2, 2), Q(2,0, -1), R(5, 0, 0) is acute (has all angles < 90°) or not, and explain why.
Determine whether the triangle with vertices P(1, 2, 2), Q(2,0, -1), R(5, 0, 0) is acute (has all angles < 90°) or not, and explain why.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Determine whether the triangle with vertices P(1, 2, 2),
Q(2,0,−1), R(5, 0, 0) is acute (has all angles < 90°) or not, and explain why.
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Step 1: Given and to find
We have to determine whether triangle PQR is acute or not.
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