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April 1, 2015

April 1, 2015

Posted by **Rita** on Friday, February 22, 2008 at 6:37pm.

Then write each vector in the form

v = ||v||[(cos A) i + (cos B) i + (cos Y) k ].

v = -6i + 12j + 4k

- Vector Algebra -
**Reiny**, Friday, February 22, 2008 at 7:25pmthe 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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