(a) Use vectors to show that A(2, 1, 1), B(3, 2, 1),and C(7, 0, 2) are vertices of a

Chapter 11, Problem 7

(choose chapter or problem)

(a) Use vectors to show that \(A(2,-1,1), B(3,2,-1)\), and \(C(7,0,-2)\) are vertices of a right triangle. At which vertex is the right angle?

(b) Use vectors to find the interior angles of the triangle with vertices \((-1,0),(2,-1)\), and \((1,4)\). Express your answers to the nearest degree.

Equation Transcription:

Text Transcription:

A(2,-1,1),B(3,2,-1)

C(7,0,-2)

(-1,0),(2,-1)

(1,4)

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