Do Vector Components Always Use Sine for Y and Cosine for X?

[PhillyGixxer]

For finding vextor componets for do i always us the sine to find y comp
and cos for x -comp ?



Also with kinematics when do i know which equation to use. Any tips or site with info would be great. This is my first post be gentle

 

[Cyrus]

You should spend a few minutes to learn what cos(x) and sin(x) means. Then you can apply that definition to the problem.

In general, you cannot use cos(x) for the x component nor sin(y) for the y component.

Your question shows me that you do not have a full understanding of cos(x) and sin(x).

 

[PhillyGixxer]

You should spend a few minutes to learn what cos(x) and sin(x) means. Then you can apply that definition to the problem.

In general, you cannot use cos(x) for the x component nor sin(y) for the y component.

Your question shows me that you do not have a full understanding of cos(x) and sin(x).

I did get that part (putting my head back in the book). I also think i am just getting really tired.

sin - o/h

cos - a/h

I was looking at the angles wrong.

 

[jasc15]

thats right. it depends if the angle of the vector is given wrt the x or y axis