Posted by Rita 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 
Reiny,
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