Math Help - Stuck on trig

1. Stuck on trig

I am rotating a 2 perpendicular fixed lines 6.5°.
How would I calculate Y1 (vertical change of the end points) and X1 (horizontal change of end points)?

2. Hi

Using complex numbers (there are other methods) I can find :

$X_1 = 2500 \cos(6.5°) - 3000 \sin(6.5°) -2500 = -355.68$

$Y_1 = 2500 \sin(6.5°) + 3000 \cos(6.5°) - 3000 = 263.72$