Find the direction cosines and angles of u and show that cos? a + cos2 B + cos2 y = 1. (Round your answers for the angles to four decimal places.) u =i+ 4j + 8k Cos a = rad cos B = rad cos y = rad

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 1E
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Find the direction cosines and angles of u and show that cos2 a + cos2 B + cos²2 y = 1. (Round your answers for the angles to four decimal places.)
u = i+ 4j + 8k
rad
Cos a =
rad
cos B =
cos y =
rad
Transcribed Image Text:Find the direction cosines and angles of u and show that cos2 a + cos2 B + cos²2 y = 1. (Round your answers for the angles to four decimal places.) u = i+ 4j + 8k rad Cos a = rad cos B = cos y = rad
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