Calculus
posted by kally on .
u, v, w are UNIT VECTORS. the angle between vector v and w is 35 degrees.
find (v+w3v). NOTE: vector u and w are on opposite sides of vector v.

Something is not right in this question.
Are all 3 vectors coplanar?
Other than u is a unit vector, we have no other information about u.
besides that, ....
(v+w  3v) would simply be w  2v
How does u enter the picture???