Determinants are used to find the area of a triangle whose vertices are given by three points
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Determinants are used to find the area of a triangle whose vertices are given by three points in a rectangular coordinate system. The area of a triangle with vertices (x1, y1), (x2 , y2), and (x3 , y3) is
where the ± symbol indicates that the appropriate sign should be chosen to yield a positive area. Use this information to work Exercises 49–50.
Use determinants to find the area of the triangle whose vertices are (3, -5), (2, 6), and (-3, 5).
Transcribed Image Text:
Area = 1+ 1 2 X1 Y1 X2 Y2 X3 X3 1 1 1
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