Question

Am i correct??

The dot product of two vectors with magnitudes of 10 and 6 is equal to 30. What is the angle formed by the vectors?

30°

45°

52° << i chose this!

60°

Answer 1

nope

Answer 2

Cos(angle)=Dotproduct/magnitudes

Answer 3

I gave you the formula in the previous post, just apply

Answer 4

\[Cos(\theta)=\frac{ 30 }{ 60 }\]

Answer 5

^^ gogogo arc cosine both sides :D

Answer 6

@sylbot Thank you so much! is it 30??^^

Answer 7

http://www.wolframalpha.com/input/?i=Cos%5BPi/3%5D
nope its 60

Answer 8

@sylbot thanks