Unformatted text preview: vector ~a iare the angles α , β and γ (in the interval [0 ,π ] that the vector ~a makes with the positive x , y and z axis. The cosines of these angles are called the direction cosines of ~a . ﬁnd a formula for the direction cosines and compute the direction angles of the vector h 4 ,1 , 5 i . 1...
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 Fall '08
 JackWaddell
 Addition, Angles, Sets, direction angles, direction cosines

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