Thread: Finding points on circles

Hi,

Attached I have a picture of my problem. I know that every circle can be said that is surrounded by a square, but I need to know certain point on a circle. How is that possible pls?

Originally Posted by doobybug

Hi,

Attached I have a picture of my problem. I know that every circle can be said that is surrounded by a square, but I need to know certain point on a circle. How is that possible pls?

1. The equation of your circle is:



To calculate the coordinates of a ceratin point you must know either the x-value or the y-value of the point.

2. If you know the angle between the given radius and the point in question then you can calculate the coordinates of the point P:

If the other response is too complex. Use (right) triangles and you will be able to figure it out.