Illustrative Mathematics
Illustrative Mathematics: F Tf Calculations With Sine and Cosine
The goal of this task is to study some values of sin x and cos x for different angles, and to look for and then explain patterns that are seen. Aligns with HSF-TF.C.8.
Windstream
Ojk's Precalculus Study Page: Evaluating and Graphing Sine and Cosine
An introduction to graphing the sine and cosine functions by using the 30-60-90 and 45-45-90 right triangle values of the two functions as guides.
Math2
Math2.org: Proofs of Derivatives of Hyperbolics
This site has proofs of derivatives of hyperbolic functions using various rules which may be viewed by clicking on the colored links.
Windstream
Ojk's Precalculus Study Page: Translations of Sine and Cosine Curves
This study tutorial covers more advanced graphing of sine and cosine functions, including horizontal and vertical translations (phase shifts and vertical shifts). Includes several examples and graphs.
Windstream
Ojk's Precalculus Study Page: Geometric Representation of Complex Numbers
An introduction to viewing the complex plane in terms of polar coordinates. Assumes knowledge of the conversion formulas. Includes several examples and pictures.
Walter Fendt
Walter Fendt: First and Second Derivative of a Function
A short interactive activity to visualize the first and second derivative of a function of your choice.
Windstream
Ojk's Precalculus Study Page: The Law of Sines
An introduction to solving acute and obtuse triangles by using the law of sines, including a derivation of the formula. Includes several pictures and examples.
Windstream
Ojk's Precalculus Study Page: Powers of Complex Numbers
An introduction to DeMoivre's Theorem for quickly finding the powers of complex numbers. Assumes knowledge of polar form of complex numbers. Includes several examples and pictures.
![Houghton Mifflin: Math Graphs: Straightedge 7 [Pdf] Unknown Type](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Houghton Mifflin: Math Graphs: Straightedge 7 [Pdf] Unknown Type")
Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 7 [Pdf]
The practice problem uses a straightedge and a figure to approximate the solution of each equation. The figure is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 8 [Pdf]
The practice problem uses a straightedge and a figure to approximate the solution of each equation. The figure is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Fitting Models to Scatter Plots 5 [Pdf]
Students evaluate a scatter plot to determine the relationship between two variables. The scatter plot is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Fitting Models to Scatter Plots 6 [Pdf]
Students evaluate a scatter plot to determine the relationship between two variables. The scatter plot is available in PDF format.
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.
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.
CK-12 Foundation
Ck 12: Inverse of Functions Through Algebraic Manipulation
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to find the inverse of functions through algebraic manipulation.
Khan Academy
Khan Academy: Amplitude of Sinusoidal Functions From Graph
Given the graph of a sinusoidal function, determine its amplitude.
CK-12 Foundation
Ck 12: Trigonometry: Half Angle Formulas
[Free Registration/Login may be required to access all resource tools.] Using identities to derive more half angle formulas.
University College London
University College London: Introduction to Hyperbolic Functions
This is a brief introduction to hyperbolic functions. Contains a definition only, no graphics.
Math Medics
S.o.s. Math: Product and Sum Formulas
This math lesson lists the product and sum formulas, and gives detailed example of using them to solve algebraic trigonometry problems.
eFunda
E Funda: Multiple Angle
At this site from eFunda you can scroll to the middle of the page for a listing of multiple angle formulas for cos, sin, and tan.
Other
Charles Sturt University: Mathematics
The Univerisity of Charles Sturt provides math help in various areas including trigonometry. Site includes copies of past exams with solutions.
Wolfram Research
Wolfram Math World: Trigonometry
This site provides a good definition of trigonometry. Includes many links to key terms and many more to related terms. This site may be used as a refresher for students who have finished the course, or students currently studying the...
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.
CK-12 Foundation
Ck 12: Trigonometry: Rectangular to Polar Conversions
[Free Registration/Login may be required to access all resource tools.] This lesson introduces Polar coordinates.
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