Pre-Calculus Index
and links to historical sketches
 

 
 
 
 
 
 










Trigonometry
    JAVA Applet for Trig Functions:  Interactive, Quiz and Feedback
http://curvebank.calstatela.edu/javatrig2/javatrig2.htm
    Sine and Cosine Functions 
http://curvebank.calstatela.edu/sine/sine.htm
    Applet for the Unit Circle - Interactive with Feedback
http://curvebank.calstatela.edu/trig/trig.htm
    Unit Circle
http://curvebank.calstatela.edu/unit/unit.htm
    JAVA Applet Interactive Trig Functions
http:http://curvebank.calstatela.edu/cs390trig/cs390trig.htm

Polar Graphs
    Maplesoft@ Code and Animations
http://curvebank.calstatela.edu/polar/polar.htm
    Curves and Code in POVRAY
http://curvebank.calstatela.edu/povray/povray.htm


Parametric Equation Graphs

    Maplesoft@ Code and Animations
http://http://curvebank.calstatela.edu/cycloidmaple/cycloid.htm
    MATHEMATICA@ Code and Animations
http://curvebank.calstatela.edu/lissajous/lissajous.htm
                               [Please see the Index of Curves for a more complete list.]

Logarithms

    Spiral of  Jakob (James) Bernoulli

Geometry:  The Circle, Pythagorean Theorem, and Distance Formula
    Estimating Distances on a Map
    Animated Derivation of the Area of a Circle and the Pythagorean Theorem

We invite you to contribute.  Make a Deposit in the Bank.
   

The background image is that of René Descartes (1596 - 1650).  He was born 46 years before Newton and 50 years before Leibniz.  Please see his Folium and the historical sketch in Equiangular Spiral

Uploaded March 20. 2004