Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**snyy****Member**- Registered: 2005-12-29
- Posts: 8

i faced some problem with coordinate points, how can i get the points (x,y) with the given distance. For example, point A(-2,1) point B(1,5). The distance is 5. so, how am i going to get the point which distance is lets say 3 or 10 from point A?? thanks...

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,214

The distance formula is given by

√[(x2-x1)²+(y2-y1)²]

Hence, the point (x,y) will be at distance 5 from A(-2,1) if the point is C(0,2). The point D will be at a distance 5 from B(1,5) if D is (0,3). There are many more such points.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**snyy****Member**- Registered: 2005-12-29
- Posts: 8

oh ya, i means i wanna find the point which 3 or 10 distance from point A which have the same M of line from A to B.. thanks..

Offline