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Find the direction cosines and angles of u and show that cos 2 + cos 2 + cos 2 = 1. (Round your answers for

Find the direction cosines and angles ofuand show that

cos2+ cos2+ cos2= 1.

(Round your answers for the angles to four decimal places.)

u=4i+5j+9k

cos

 =

rad

cos

 =

rad

cos

 =

rad

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