### Software Overview

"The Trigonometry Exploer" CD-ROM will run on Macintosh or Windows computers.

Requirements: Mac OS 7.1 or higher or Windows 3.1 or 95, 8 Meg. RAM, 10 Meg HD space, Sound card recommended.

To order call: 1-800-335-0781

The following is an outline of the entire program's content. There is approxatmly 300 Megabytes of lessons, applications, and problems on the disk. There IS something for everybody!

The TRIG Explorer meets the latest National Council of Teachers of Mathematics (NCTM) standards.

"The Trigonometry Explorer" provides a unique learning experience. The software contains of lessons that use creative, animated and engaging illustrations and real world applications. The TRIG Explorer builds many bridges from math to science, history, and real world phenomena. It uses voice, music, creative animations, and many interactive activities.

Degrees

Lesson
Definition of degrees
Positive Degrees
Right angle
Negative degrees
Exploration
Latitude and Longitude

Angles

Lesson
Definition of angle
Create angles
Angle in standard position
Coterminal angles
Reference angle
Angle names
Complementary angles
Supplementary angles
Exploration
Sextant
Measure angles with protractor

Lesson
pi equals circumference divided by diameter
pi for different size circles
Arclength defined
2 pi radians in a circle
Converting degrees to radians
Converting radians to degrees
Exploration
Eratosthenes - measure circumference of earth

Triangles

Lesson
Definition of triangle
Create triangles angles add up to 180
Triangle types equilateral, isosceles, scalene, acute, obtuse, right triangle
Right Triangle
Triangle area
Exploration
Trusses includes Tacoma Narrows Bridge video

Right Triangles

Lesson
Pythagorean Theorem
Ratios of sides
Create ratios
Height of Statue of Liberty using ratios of sides
Exploration
Pythagoras
Exercises

Functions

Lesson
Right triangle in a Cartesian coordinate system
Definition of trig functions
Sine, Cosine, Tangent, Cosecant, Secant, Cotangent
Explore right triangles in X-Y System
Explore trig relationships
Given a point, find sine, cosine, tangent
Trig function signs
Reciprocals
Explorations
Parallax
Clinometer
Surveying
Exercises

Plotting

Lesson
Plot y = sin as a function of
Plot y = cos
Cofunctions
Plot y = tan
Explore amplitude of sine, cosine, tangent
Periodic function
Sine plotted for 2 periods
Explore period
Explore phase shift
General case - Amplitude/period/phase shift formula
Waves
One-dimensional traveling wave
One-dimensional harmonic traveling wave
Plot
Explorations
Sound
Color and Light
Adding Sine Functions - Sine Fun

Inverse Functions

Lesson
Definition of inverse functions
Solve for
Arcsine
Explore arcsine
Arccosine
Explore arccosine
Arctangent
Explore arctangent
Find standard position angle of a point using the arctangent
Explorations
Refraction
Polar Coordinates
Exercises