How to Calculate the New Position of a Pivoted Vector?

[uktonybe]

Its been a while since I've done any type of calculus.
So here we go. Vectors is this scenario represent cords, which will translate in a vector in future calulations
For the purposes of this calculation, Vectors only use (x, y).
Vector 1 originates from pivot (0,0) and is of constant length X.
Vector 2 is the result of Vector 1 pivoting by angle A and what I need is the formulas for calculating the new position of Vector 2 using the constant length X.

Many thanks.

 

[jedishrfu]

What you're asking isn't calculus rather its more vector algebra. Anyway...

Okay so you have an xy coordinate system so for vector v

vx = |v| cos theta And vy = |v| sin theta

Can't you simply use vx to determine theta and then sub in angle+theta to compute the new cords?