Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter10: Measurement, Area, And Volume
Section: Chapter Questions
Problem 5CR
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![Find the cosine of the angle between the planes x + y + z = 0 and x + 4y + 2z = 9.
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Transcribed Image Text:Find the cosine of the angle between the planes x + y + z = 0 and x + 4y + 2z = 9.
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