Thread: Find the Length Between 2 Points With X, Y of Both Points and Angle of Line?

need to have a math equation that finds the length of the segment of line that is located between 2 points on that line.
The variables I know are:

1. x, y of one point
2. x, y of other point
3. angle of the line (it can rotate anywhere in 360 degrees, its rotation point is the second point)

I'm just a programmer who isn't that good at math

Thanks in advance! Ask if you have any questions!

And here's the pic of the math problem for some visual:
EDIT: Oops, never mind about the Radius of the circle, that wont help.

Originally Posted by jebego

need to have a math equation that finds the length of the segment of line that is located between 2 points on that line.
The variables I know are:

1. x, y of one point
2. x, y of other point
3. angle of the line (it can rotate anywhere in 360 degrees, its rotation point is the second point)

I'm just a programmer who isn't that good at math

Thanks in advance! Ask if you have any questions!

And here's the pic of the math problem for some visual:
EDIT: Oops, never mind about the Radius of the circle, that wont help.

I'm not sure that I understand your question correctly ...

In general: If you have 2 points and then the distance between these 2 points is calculated by:



In 3-D-space you have:

If you have 2 points and then the distance between these 2 points is calculated by:

In your case jepego x1 and y1 would = 0

x2 and y2 are the points of the other x and y. The equation above will give you the distance.