Q: Given three points in space P(1, -1, 0), Q(2, 1, -1),and R(-1, 1, 2), do the following: 1-Find the normal vector to the plane that contains all the three points. 2-Find the scalar product of PQ and PR and the angle 0 between them. 3-Show that |PQ x PR| = |PQ||PR| sin 0. 4-Prove that the area of a triangle PQR is PQ x PR|.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Vectors In Two And Three Dimensions
Section9.6: Equations Of Lines And Planes
Problem 2E
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Q: Given three points in space P(1, -1, 0), Q(2, 1, -1),and R(-1, 1, 2),
do the following:
1-Find the normal vector to the plane that contains all the three
points.
2-Find the scalar product of PQ and PR and the angle 0 between
them.
3-Show that |PQ × PR| = |PQ| |PR| sin 0.
4-Prove that the area of a triangle PQR is PQ × PR|.
Transcribed Image Text:Q: Given three points in space P(1, -1, 0), Q(2, 1, -1),and R(-1, 1, 2), do the following: 1-Find the normal vector to the plane that contains all the three points. 2-Find the scalar product of PQ and PR and the angle 0 between them. 3-Show that |PQ × PR| = |PQ| |PR| sin 0. 4-Prove that the area of a triangle PQR is PQ × PR|.
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