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Activity
Other

Randelshofer / Online Scientific Calculator

For Students 9th - 10th
This is an online scientific calculator! Just type as if you were using a handheld calculator. Includes trigonometric functions, degrees, radian modes and other useful functions.
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Interactive
Interactive Mathematics

Interactive Mathematics: Graphs of Tan, Cot, Sec, & Csc

For Students 9th - 10th
Several examples are presented that demonstrate how to graph the tan, cot, sec, and csc functions.
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Graphic
Math2

Math2.org: Trigonometry Tables

For Students 9th - 10th Standards
Three trig tables are provided for student and teacher reference. The first table lists the sine, cosine, tangent, secant, cosecant, and cotangent values of all whole-number angles from 0 to 90. The radian equivalent (to four decimals)...
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Activity
Interactive Mathematics

Interactive Mathematics: Integration by Trig Substitution

For Students 9th - 10th
Having trouble integrating those tough functions? Try using Trigonometric Substitution. This lesson demonstrates the process and allows for you to practice using the examples provided.
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Activity
Free Math Help

Free Math Help: Trigonometry Derivatives

For Students 9th - 10th Standards
The tutorial examines trigonometric derivatives. Formulas, graphs, and an example are included.
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Handout
Johan Claeys

Math Abundance: Trigonometry: The Sine Function

For Students 9th - 10th Standards
Definition of a sine function. Range and period also are given. Graph of sine function given as well.
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Interactive
Walter Fendt

Walter Fendt: Sine, Cosine and Tangent of an Angle

For Students 9th - 10th Standards
A short interactive activity to visualize the trigonometric functions: sine, cosine, and tangent.
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Graphic
Math Medics

S.o.s. Math: Hyperbolic Functions

For Students 9th - 10th Standards
This lesson defines and explains hyperbolic functions. It has graphs and examples for the student to examine.
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Activity
Texas Instruments

Texas Instruments: Phases of the Moon

For Teachers 9th - 10th
In this TI InterActive! activity, students study the phases of the moon, plot the fraction of the moon showing each day in a month, and fit the data with an appropriate trigonometric function.
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Activity
Texas Instruments

Texas Instruments: Exploring the Unit Circle

For Teachers 9th - 10th Standards
In this activity, students explore the properties of a unit circle and its mapping functions.
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Lesson Plan
Alabama Learning Exchange

Alex: "Woody Sine"

For Teachers 9th - 10th
The young scholars will discover the shape of the sine function without creating a t-chart. The students will create a sine function using toothpicks. The young scholars will then discover how the amplitude (height) and the period...
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Interactive
Interactive Mathematics

Interactive Mathematics: Graphs of Tangent, Cotangent, Secant, and Cosecant

For Students 9th - 10th Standards
The tutorial explores the graphs of the tangent, cotangent, secant, and cosecant functions. The resource consists of animations and examples.
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Activity
Interactive Mathematics

Interactive Mathematics: Phase Shift

For Students 9th - 10th
The tutorial investigates phase shift by examining the shapes of the sine and cosine functions. The resource consists of definitions, animations, interactive graphs, and examples. Practice problems with solutions are included.
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Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Horizontal Translations or Phase Shifts

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] Defining horizontal translations of sine and cosine functions.
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Activity
Texas Instruments

Texas Instruments: Kinematics Investigation

For Teachers 9th - 10th
In this activity, students solve trigonometric equations and investigate kinematics. They calculate and graph the displacement, velocity, and acceleration of trigonometric functions.
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Activity
Interactive Mathematics

Interactive Mathematics: Sine, Cosine, Tan & Reciprocals

For Students 9th - 10th Standards
The definitions of the six trig ratios are presented here, along with several examples of how to determine the ratios given 2 or more sides of a right triangle.
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Activity
Other

Trigonometry: A Crash Review

For Students 9th - 10th
This site really is a crash review on trigonometry! Formulas, functions - you name it, it's covered! Also includes self quizzes for practice.
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Activity
Paul Dawkins

Paul's Online Notes: Calculus I: Review

For Students 9th - 10th Standards
Learners review the algebra and trigonometric skills needed in a Calculus course. Topics investigated are solving trigonometric equations, logarithmic functions, exponential functions, functions, and common graphs. Class notes,...
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Unknown Type
Khan Academy

Khan Academy: Solve Sinusoidal Equations (Basic)

For Students 9th - 10th
Solve equations of the form sin(x)=d or cos(x)=d where d is any number. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
Wolfram Research

Wolfram Math World: Double Angle Formulas

For Students 9th - 10th
Part of Eric Weisstein's comprehensive math site, this page deals with double-angle formulas. This site includes traditional trigonomic double-angle functions as well as hyperbolic trigonometric function. Includes links to related terms...
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Activity
Texas Instruments

Texas Instruments: Learning Pre Calculus With the Ti 89

For Teachers 9th - 10th
See examples of how to use the TI-89 in Pre-Calculus. Example topics include equations with radicals, trigonometric identities, composition of functions, and inverse functions.
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Activity
Other

Brown Math: A 10 Minute Trig Review

For Students 9th - 10th Standards
Looking for a 10-minute review of the major concepts of trigonometry? This site is a quick recap of degrees and radians, SOH CAH TOA, Pythagorean identities, and special right triangles are all found here.
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Activity
Texas Instruments

Texas Instruments: Using Derive

For Teachers 9th - 10th Standards
In this activity, students use the Derive software to solve trigonometric equations, expressions with exponentials, and log equations. They also determine the equation of tangent and normal of a function; evaluate integrals, find area...
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Activity
Interactive Mathematics

Interactive Mathematics: Radians

For Students 9th - 10th
Learn the definition of radians and how to calculate trig ratios using radian measures. Examples are provided showing how to convert from degrees to radians.