11. Find the cosine of the measure of the angle between A and B.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter12: Angle Relationships And Transformations
Section: Chapter Questions
Problem 2CUR
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In Exercises 5 through 14, let A = (-4, -2, 4), B = (2,7, -1), C= (6, -3, 0), and D = (5, 4,-3).
6. Find A · B+A.C
9. Find (B D)A - (D · A)B
5. Find A· (B+ C)
8. Find A · D-B c
7. Find (A · B)(C D)
10. Find (2A + 3B) • (4C - D)
11. Find the cosine of the measure of the angle between A and B.
12. Find the cosine of the measure of the angle between C and D.
Transcribed Image Text:In Exercises 5 through 14, let A = (-4, -2, 4), B = (2,7, -1), C= (6, -3, 0), and D = (5, 4,-3). 6. Find A · B+A.C 9. Find (B D)A - (D · A)B 5. Find A· (B+ C) 8. Find A · D-B c 7. Find (A · B)(C D) 10. Find (2A + 3B) • (4C - D) 11. Find the cosine of the measure of the angle between A and B. 12. Find the cosine of the measure of the angle between C and D.
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