Answered: Let P(2,1,5), Q(-1,3,4) and R(3,0,6) be…

Let P(2,1,5), Q(-1,3,4) and R(3,0,6) be points. Which of the following is the area of the triangle PQR? O a. 2 O b. V8/2 O C. V8 O d. 6/2 O e. 6

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

Problem 31EQ

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Concept explainers

Coordinate Geometry

Coordinate geometry, also known as analytic geometry or Cartesian geometry in classical mathematics, is a type of geometry that is studied using a coordinate system. Coordinate geometry is a branch of mathematics that describes the position of points on a plane using an ordered pair of numbers called coordinates.

Question

Let P(2,1,5), Q(-1,3,4) and R(3,0,6) be points. Which of the following is the area of the triangle PQR?
O a. 2
O b. V6/2
O c. J8
O d. 6/2
O e. 6

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