Other
Randelshofer / Online Scientific Calculator
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.
Interactive Mathematics
Interactive Mathematics: Graphs of Tan, Cot, Sec, & Csc
Several examples are presented that demonstrate how to graph the tan, cot, sec, and csc functions.
Math2
Math2.org: Trigonometry Tables
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)...
Interactive Mathematics
Interactive Mathematics: Integration by Trig Substitution
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.
Free Math Help
Free Math Help: Trigonometry Derivatives
The tutorial examines trigonometric derivatives. Formulas, graphs, and an example are included.
Johan Claeys
Math Abundance: Trigonometry: The Sine Function
Definition of a sine function. Range and period also are given. Graph of sine function given as well.
Walter Fendt
Walter Fendt: Sine, Cosine and Tangent of an Angle
A short interactive activity to visualize the trigonometric functions: sine, cosine, and tangent.
Math Medics
S.o.s. Math: Hyperbolic Functions
This lesson defines and explains hyperbolic functions. It has graphs and examples for the student to examine.
Texas Instruments
Texas Instruments: Phases of the Moon
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.
Texas Instruments
Texas Instruments: Exploring the Unit Circle
In this activity, students explore the properties of a unit circle and its mapping functions.
Alabama Learning Exchange
Alex: "Woody Sine"
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...
Interactive Mathematics
Interactive Mathematics: Graphs of Tangent, Cotangent, Secant, and Cosecant
The tutorial explores the graphs of the tangent, cotangent, secant, and cosecant functions. The resource consists of animations and examples.
Interactive Mathematics
Interactive Mathematics: Phase Shift
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.
CK-12 Foundation
Ck 12: Trigonometry: Horizontal Translations or Phase Shifts
[Free Registration/Login may be required to access all resource tools.] Defining horizontal translations of sine and cosine functions.
Texas Instruments
Texas Instruments: Kinematics Investigation
In this activity, students solve trigonometric equations and investigate kinematics. They calculate and graph the displacement, velocity, and acceleration of trigonometric functions.
Interactive Mathematics
Interactive Mathematics: Sine, Cosine, Tan & Reciprocals
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.
Other
Trigonometry: A Crash Review
This site really is a crash review on trigonometry! Formulas, functions - you name it, it's covered! Also includes self quizzes for practice.
Paul Dawkins
Paul's Online Notes: Calculus I: Review
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,...
Khan Academy
Khan Academy: Solve Sinusoidal Equations (Basic)
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.
Wolfram Research
Wolfram Math World: Double Angle Formulas
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...
Texas Instruments
Texas Instruments: Learning Pre Calculus With the Ti 89
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.
Other
Brown Math: A 10 Minute Trig Review
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.
Texas Instruments
Texas Instruments: Using Derive
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...
Interactive Mathematics
Interactive Mathematics: Radians
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.