Hi. I'm having trouble with this question:
Two unit vectors make an angle of 75° with one another. Find |3a+2b|.
I know that the dot product of two unit vectors will equal the cosine of the angle between them, but I just don't know how to apply that.
Help would be appreciated, thanks. Also sorry for posting in the wrong section originally.
Edit: Well, found my answer searching through the forum:http://www.mathhelpforum.com/math-he...s-problem.html
Can close this thread or whatever