A triangle has vertices : A(2, 1, − 1), B(4, 2, 0), and C(3, — 1, x). - - i. For what real values of x is the triangle a right triangle? ii. iii. Find a vector that is normal to the plane formed by this triangle if x = 3. What is the projection of any of the sides of the triangle onto this normal vector?

Elementary Linear Algebra (MindTap Course List)
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Chapter5: Inner Product Spaces
Section5.CM: Cumulative Review
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A
triangle has vertices : A(2, 1, − 1), B(4, 2, 0), and C(3, — 1, x).
-
i.
For what real values of x is the triangle a right triangle?
ii.
iii.
Find a vector that is normal to the plane formed by this triangle if x = 3.
What is the projection of any of the sides of the triangle onto this normal
vector?
Transcribed Image Text:A triangle has vertices : A(2, 1, − 1), B(4, 2, 0), and C(3, — 1, x). - i. For what real values of x is the triangle a right triangle? ii. iii. Find a vector that is normal to the plane formed by this triangle if x = 3. What is the projection of any of the sides of the triangle onto this normal vector?
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