Find the direction angles of the vector given below.

Question

Then write each vector in the form
v = ||v||[(cos A) i + (cos B) i + (cos Y) k ].

v = -6i + 12j + 4k

Answer 1

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