Explanation Given: The vectors are P ( − 1 , − 1 , − 1 ) , Q ( 1 , − 1 , − 1 ) , R ( − 1 , 1 , − 1 ) . Concept Used: Area of triangle, A = 1 2 | P Q → × P R → | . First we make two vector and apply into formula. P Q → = ( 1 + 1 ) i + ( − 1 + 1 ) j + ( − 1 + 1 ) k P Q → = 2 i P R → = ( − 1 + 1 ) i + ( 1 + 1 ) j + ( − 1 + 1 ) k P R → = 2 j Now calculate the cross product of both vector

Student's Solution and Survival Manual for Calculus

7th Edition

ISBN: 9781524934040

Author: STRAUSS MONTY J, TODA MAGDALENA DANIELE, SMITH KARL J

Publisher: Kendall Hunt Publishing

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Chapter 9.4, Problem 26PS

To determine

To find: The area of the triangle PQR, P(−1,−1,−1),Q(1,−1,−1),R(−1,1,−1).

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Chapter 9.4, Problem 25PS

Chapter 9.4, Problem 27PS

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Chapter 9 Solutions

Student's Solution and Survival Manual for Calculus

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The area of the triangle PQR, P ( − 1 , − 1 , − 1 ) , Q ( 1 , − 1 , − 1 ) , R ( − 1 , 1 , − 1 ) .

Solution Summary: The author explains how to find the area of the triangle PQR.

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To find: The area of the triangle PQR, P(−1,−1,−1),Q(1,−1,−1),R(−1,1,−1).

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Chapter 9 Solutions