Math Is Fun Forum

roadkillguy

Guest

lines and angles....

I am trying to find an x y coordinate from a given angle, distance, and starting point.

The Idea would be to find the coordinates for a point along the outside of a circle, from a given angle.

Any simple equations?

justlookingforthemoment

Moderator

Registered: 2005-05-26

Posts: 2,161

Re: lines and angles....

Using your given angle (which we can represent as t) and your given distance (we can represent as r),

r * cos(t) = x co-ordinate
r * sin(t) = y co-ordinate.

Then add the corresponding x and y co-ordinates of the two points (starting point and the point you just found).