Mathematics Academy

Showing posts with label Straight Line. Show all posts

Thursday, June 21, 2012

Straight Line - Distance Form

The equation of a straight line passing through (x₁,y₁) and making an angle θ with the positive direction of x – axis is
(x-x₁)/cosθ = (y-y₁)/sinθ=r ,
where r is the distance of the point (x,y) on the line from the point (x₁,y₁).
This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

Tuesday, June 19, 2012

Straight Line - Normal Form

The equation of a straight line upon which the length of the perpendicular from the origin is p and this perpendicular makes an angle α with x- axis is x cosα + y sinα = p.

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

Monday, May 21, 2012

Pappu's Theorem

If A1, B1, and C1 are three points on a line, and A2 , B2 and C2 are three points on a second line.If A1B2 meets A2B1 at X, and A1C2 meets A2C1 at Y, and B1C2 meets B2C1 at Z, then X, Y, and Z are collinear (on a straight line).

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com