Windstream
Ojk's Precalculus Study Page: Trigonometry Sample Test
A practice test that covers proving trigonometric identities and solving advances trigonometric equations.
Cuemath
Cuemath: Tangent Function
A comprehensive guide for learning all about tangent functions with definitions, tangent formula, tangent meaning, range and domain of the tangent function, tan function graph, trigonometric ratios, trig identities, solved examples, and...
CK-12 Foundation
Ck 12: Trigonometry: Trigonometry in Terms of Algebra
[Free Registration/Login may be required to access all resource tools.] Define trigonometric relationships with algebraic ratios.
CK-12 Foundation
Ck 12: Trigonometry: Definition of Inverse Reciprocal Trig Functions
[Free Registration/Login may be required to access all resource tools.] Define reciprocal function.
CK-12 Foundation
Ck 12: Trigonometry: Even and Odd Identities
[Free Registration/Login may be required to access all resource tools.] Define even and odd functions.
CK-12 Foundation
Ck 12: Trigonometry: Reciprocal Identities
[Free Registration/Login may be required to access all resource tools.] Find the reciprocal of trigonometric functions
University of Saskatchewan (Canada)
Exercises in Math Readiness for University Study: Trig
Read a lesson, look at examples, and try easy, medium, and advanced problems from a variety of trigonometry topics: radian measure of angles, trigonometric functions, trigonometric identities, and modeling with trigonometric functions.
CK-12 Foundation
Ck 12: Trigonometry: Inverses by Mapping
[Free Registration/Login may be required to access all resource tools.] Find the inverse of a trig function by mapping.
Texas Instruments
Texas Instruments: Math Today When a Ruler Isn't Enough
This activity illustrates a real-life problem that uses trigonometry to solve for an unknown. students can use trigonometric ratios and inverse trigonometric relationships to determine the side of a triangle and the measure of the...
CK-12 Foundation
Ck 12: Trigonometry: Sum to Product Formulas for Sine and Cosine
[Free Registration/Login may be required to access all resource tools.] Examples of transforming a sum of trigonometric functions to a product of trigonometric functions.
Purple Math
Purplemath: Special Angle Values: 30 60 90 and 45 45 90 Triangles
Explains a simple pictorial way to remember basic reference angle values. Provides other memory aids for the values of trigonometric ratios for these "special" angle values, based on 30-60-90 triangles and 45-45-90 triangles.
CK-12 Foundation
Ck 12: Definition of the Inverse of Trigonometric Ratios
[Free Registration/Login may be required to access all resource tools.] Explain the inverse of trigonometric functions.
CK-12 Foundation
Ck 12: Composition of Inverse Reciprocal Trig Functions
[Free Registration/Login may be required to access all resource tools.] On this site students learn about the composition of inverse trigonometric functions. Students read about inverse reciprocal functions, watch a video about the topic...
Mangahigh
Mangahigh: Pyramid Panic: Basic Shapes to Advanced Geometry
Guide a mummy safely through the burial chambers of a pyramid as you solve length and area problems in basic to advanced geometry. There are four game zones that deal with circles and triangles, quadrilaterals, the Pythagorean Theorem,...
CK-12 Foundation
Ck 12: Trigonometry: Secant, Cosecant, and Cotangent Functions
[Free Registration/Login may be required to access all resource tools.] Calculate the secant, cosecant, and cotangent functions using the sides of a triangle.
CK-12 Foundation
Ck 12: Trigonometry: Sine and Cosecant Graphs
[Free Registration/Login may be required to access all resource tools.] Define the sine and cosecant graphs using a unit circle.
CK-12 Foundation
Ck 12: Trigonometry: Trigonometric Functions of Negative Angles
[Free Registration/Login may be required to access all resource tools.] Learn how to define trigonometric functions of angles with negative values.
Texas Instruments
Texas Instruments: Sin, Cos, and Tan of Right Triangles
In this activity, students explore a right angled triangle and its trigonometric concepts. They investigate the trigonometric ratios for the angles of the triangle.
Illustrative Mathematics
Illustrative Mathematics: G Srt, G Mg Coins in a Circular Pattern
In this task, students investigate how many coins will fit around a central coin when they are all of the same denomination, and if there is room left over. The teacher is given a chart of four coin denominations and their diameters, but...
Wolfram Research
Wolfram Math World: Inverse Trigonometric Functions
A site on inverse trigonometric functions. Contains a definition, a chart showing functions and their domains, formulas, and many links.
Wolfram Research
Wolfram Math World: Half Angle Formulas
This page, from Eric Weisstein's comprehensive Math World site, offers information on half-angle formulas. The site includes traditional trigonometric fuctions half-angle formulas as well as hyperbolic half-angle formulas. Includes links...
CK-12 Foundation
Ck 12: Trigonometry: Trigonometric Identities and Equations
[Free Registration/Login may be required to access all resource tools.] Describe general forms and graphs for cosine and sine equations.
Lawrence Hall of Science
The Math Page: Trigonometry: Trig Functions of an Acute Angle
Here is a site that clearly and thoroughly explains the trigonometric functions of acute angles within a right triangle. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...
Khan Academy
Khan Academy: Trigonometry: Evaluate Inverse Trig Functions
Given a sine, cosine, or tangent value, find the principle angle that has this value. In other words, find the arcsine, arccosine, or arctangent of that value. Students receive immediate feedback and have the opportunity to try questions...