I need help with vectors

[mindy88]

The problem is:

The unit vector that makes an angle [(2)(Pi)]/3 with the positive x-axis and it asks you to find the component form of the vector.

I don't even know where to start. Any help would be great. Thanks.

 

[tkhunny]

Maybe (cos(2pi/3),sin(2pi/3))?

 

[mindy88]

how did you get that?

 

[galactus]

A unit vector has length 1.

Component form:

\(\displaystyle \L\\v=||v||cos{\phi}i+||v||sin{\phi}j\)

||v||=1 since this is a unit vector. So you have what tkh said.