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Vector Algebra

posted by on .

Find the direction angles of the vector given below.
Then write each vector in the form
v = ||v||[(cos A) i + (cos B) i + (cos Y) k ].

v = -6i + 12j + 4k

  • Vector Algebra - ,

    the maginitued of vector v = √((-6)^2+12^2+4^2)
    = 14

    so the directin cosines are (-6/14,12/14,4/14)

    and the angles are 115.4º, 31º, and 73.4º

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