Math Is Fun
Math Is Fun: Solving Triangles
Find guidelines to help you "solve" triangles, which means finding the value of missing sides and angles. Provided are examples of six scenarios in which you can solve a triangle's missing measurements, as well as relevant equations,...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Trigonometric Ratios
Sixteen problems cover a variety of topic of trigonometric ratios. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check each...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Law of Sines and Law of Cosines
Sixteen problems present practice working with the Law of Sines and Law of Cosines. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
CK-12 Foundation
Ck 12: Trigonometry: Sine, Cosine, and Tangent Functions
[Free Registration/Login may be required to access all resource tools.] Calculate sine, cosine, and tangent functions using the sides of a right triangle.
CK-12 Foundation
Ck 12: Trigonometry: Derivation of the Triangle Area Formula
[Free Registration/Login may be required to access all resource tools.] Determine an alternate formula for a triangle's area.
BBC
Bbc: Radians and Equations
BBC provides a tutorial that explains how radians are related to degrees and demonstrates how to solve trig equations in radian units. Examples and a practice test are available.
Math Is Fun
Math Is Fun: Sohcahtoa: Sine, Cosine, Tangent
Students learn about the relationships between sine, consine, and tangent. The tutorial consists of notes, examples, and practice problems to check for comprehension.
Math Is Fun
Math Is Fun: Sine Function: Graph Exercise
The resource consists of an activity that investigates the graph of the sine function.
Texas Instruments
Texas Instruments: Sine and Cosine
This set of questions measures knowledge of amplitude, horizontal and vertical shift, and periods of sine and cosine graphs. Questions are multiple-choice and true/false; solutions are included.
Texas Instruments
Texas Instruments: Sine and Cosine Graphs
This activity will help students identify the amplitude, period and shifts of graphs of sine and cosine using the TI-Navigator.
CK-12 Foundation
Ck 12: Trigonometry: Alternate Formula for the Area of a Triangle
[Free Registration/Login may be required to access all resource tools.] An alternate formula for the area of a triangle.
CK-12 Foundation
Ck 12: Trigonometry: Product to Sum Formulas for Sine and Cosine
[Free Registration/Login may be required to access all resource tools.] Examples of how to transform a product of trigonometric functions into a sum of trigonometric functions
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.
Wolfram Research
Wolfram Math World: Sine
MathWorld provides graphs of the sine function, both 2-dimensional and 3-dimensional. Higher level mathematical applications given, including the hyperbolic sine function, representation of the sine function as an infinite sum as well as...
Analyze Math
Analyze Math: Unit Circle and Trigonometric Functions
The free mathematics tutorial explores the unit circle and trigonometric functions. The tutorial consists of definitions and examples with solutions. The interactive applet allows students to investigate domain, range, and asymptotes of...
Oswego City School District
Regents Exam Prep Center: Unit Circle
Two hands-on lab activities for instructors to use when teaching about the coordinate graphs of the sine, cosine, and tangent functions derived from a unit circle. The graphs of the reciprocals of the three functions are investigated....
Oswego City School District
Regents Exam Prep Center: Area of a Triangle and Parallelogram Using Trig
How can trigonometry be used to find the area of a triangle or parallelogram? Does the triangle need to be a right triangle, and how accurate can the results possibly be? The answers to these questions are found here along with several...
Khan Academy
Khan Academy: Period of Sinusoidal Functions From Graph
Given the graph of a sinusoidal function, determine its period. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Midline of Sinusoidal Functions From Graph
Given the graph of a sinusoidal function, determine its midline equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
University of Arizona
The University of Arizona: Modeling With Sinusoidal Functions [Pdf]
This site provides several real-world application problems that can be solved using sinusoidal functions. Students are asked to sketch, model and solve the problems.
Purple Math
Purplemath: Trigonometric Functions and Their Graphs
Explains the horizontal forms of trigonometric graphs by showing how they relate to the circular graphs.
Physics Aviary
Physics Aviary: Equations of Sine Curves
This game will help students determine the coefficients of sine curves. Students must determine the A, B, C and D values for a randomly generated sine curve. This video describes the program:...
Physics Aviary
Physics Aviary: Mc Culley's Trig Thing
This program gives students a visual representation of sine and cosine at different angles. A unit vector will cycle through different angles and students can see the changes that take place to the horizontal part and the vertical part...
Physics Aviary
Physics Aviary: Visualizing Sine Curves
This program gives students a visual representation of sine curves. The hope is that students can relate properties of the ferris wheel to properties of the sine curve. The height of the center of the ferris wheel is their vertical...