"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

**Angles**

**Lesson
**Definition of angle

Create angles

Angle in standard position

Coterminal angles

Reference angle

Angle names

Complementary angles

Supplementary angles

Measure angles with protractor

**Radians**

**Lesson
**pi equals circumference divided by diameter

pi for different size circles

Arclength defined

Radians

2 pi radians in a circle

Converting degrees to radians

Converting radians to degrees

**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

**Right Triangles**

**Lesson
**Pythagorean Theorem

Hypotenuse, Adjacent, Opposite

Ratios of sides

Create ratios

Height of Statue of Liberty using ratios of sides

**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

Clinometer

Surveying

**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

Radio Waves

Color and Light

**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