Find the direction cosines of the vector <4, 8, 8) 4 8 8 COST COSB 12 COST 12 12 4 8 8 Cosa COSB √12 - Cosy = 12 √12 4 8 Cosa 8 cosẞ = √20 cosy = 20 √20 4 8 8 cosB √15 - COST Cosy = √15 15 8 8 4 √15 cosẞ = COST √15 15 Determine which of the following pairs of vectors are neither parallel nor orthogonal. a = (6, 1), b = (9,-3) a = (6,0, 3), b = (0, -7,0> a = (1, 2,0), b = (2,-1, 10) a = -5i +2j, b = 20i-8j a = i+3k, b = 34i +102k

Find the direction cosines of the vector <4, 8, 8) 4 8 8 COST COSB 12 COST 12 12 4 8 8 Cosa COSB √12 - Cosy = 12 √12 4 8 Cosa 8 cosẞ = √20 cosy = 20 √20 4 8 8 cosB √15 - COST Cosy = √15 15 8 8 4 √15 cosẞ = COST √15 15 Determine which of the following pairs of vectors are neither parallel nor orthogonal. a = (6, 1), b = (9,-3) a = (6,0, 3), b = (0, -7,0> a = (1, 2,0), b = (2,-1, 10) a = -5i +2j, b = 20i-8j a = i+3k, b = 34i +102k

Trigonometry (MindTap Course List)

10th Edition

ISBN:9781337278461

Author:Ron Larson

Publisher:Ron Larson

Chapter3: Additional Topics In Trigonometry

Section3.4: Vectors And Dot Products

Problem 4ECP

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