Direction cosines The direction cosines of a vector are the cosines of the angles makes with the coordinate axes. The cosines of the angles betwee the vector and the x, y, and z axes are usually called, in turn, a, and y. Prove that a +B? + y = 1, using either geometry or vectc algebra.
Direction cosines The direction cosines of a vector are the cosines of the angles makes with the coordinate axes. The cosines of the angles betwee the vector and the x, y, and z axes are usually called, in turn, a, and y. Prove that a +B? + y = 1, using either geometry or vectc algebra.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Transcribed Image Text:1.4 Direction cosines
The direction cosines of a vector are the cosines of the angles
makes with the coordinate axes. The cosines of the angles betwee
the vector and the x, y, and z axes are usually called, in turn, a,f
and y. Prove that a2 +B² + y = 1, using either geometry or vecto
algebra.
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