# Category: Mathematics

## EKL Creating an Involute Curve

Creating an Involute Curve is really useful when building Involute Gears which will be a post later on. So, what is an Involute, if we wrapped a piece of string…

## Trigonometry Math Problem – 2

Trigonometry Math Problem – 2 Given the Tri-Tangent Circle with Radius 30mm and the Angle Theta with value of 20deg. find the length X. Tricky Triangle Trigonometry Constants Things we…

## Trigonometry Math Problem

Trigonometry Math Problem My wife’s friend’s child was having a problem with a trigonometry math problem and wanted some help, It took me a while but i figured I would…

## Transformation Matrices – Direct 3D Rotations

Transformation Matrices – Direct 3D Rotations So again a big thank you to Catarina Carvalheiras, were going to take a look at rotations this time with no translations this means…

## Basic Calculus

Basic Calculus Let me start of by saying I’m a CAD freak and those who know me might be a little surprised by this post, but there are aspects of…

## Intersection of Two Planes

Intersection of Two Planes Lets take two planes and determine the vector form for the line of intersection. Vector Cross Product Let’s start with the vector cross product of the…

## Lines

Lines Let’s image we have a point in space Point(A) -2 ; 1 ; 4 and Point(B) 10 ; -7 ; 13 we can define Vector(N) for this line: Now…

## Plane Through Three Points

Plane Through Three Points This is done in a series of small steps; Select One Point to be the Primary Point(P) Create Two vectors from the Primary Point(P) to the…