Handout
University of Guelph

University of Guelph: Physics Tutorials: Torque and Angular Acceleration

For Students 9th - 10th
Words and equations are used to explain the relationship between angular acceleration and the torque exerted upon an object. Well-written; great graphics.
eBook
Math Planet

Math Planet: Algebra 2: Angles

For Students 9th - 10th Standards
Features a definition, examples, and a video lesson all related to angles. [0:35]
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Rectangular to Polar Conversions

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson introduces Polar coordinates.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Sides of an Oblique Triangle

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers using the Law of Cosines to find the third side of a triangle.
Interactive
Cool Math

Coolmath: The Unit Circle

For Students 10th - 12th Standards
Description and examles of the unit circle angles.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F Tf Trigonometric Functions for Arbitrary Angles

For Teachers 9th - 10th Standards
The purpose of this task is to examine trigonometric functions for obtuse angles. Aligns with F-TF.A.2.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Introduction to the Triangle Area Formula

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to find the area of a triangle using sine.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Pythagorean Theorem for Solving Right Triangles

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson applies the trigonometric ratios and their inverses to real-life situations.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Polar to Rectangular Conversions

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson teaches you how to change Polar coordinates into rectangular coordinates.
Unit Plan
CK-12 Foundation

Ck 12: Determination of Unknown Angles Using Law of Cosines

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers using the Law of Cosines to find an angle in a triangle.
Handout
Math Open Reference

Math Open Reference: Angle

For Students 9th - 10th Standards
Learn about angles with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Handout
Math Open Reference

Math Open Reference: Arc Length

For Students 9th - 10th
Learn about arc length with this handy reference guide. Provides a detailed definition examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Handout
Purple Math

Purplemath: Solving Simple (To Medium Hard) Trig Equations

For Students 9th - 10th Standards
Introduces techniques for solving trigonometric equations. Provides worked examples of solving some simpler to medium-hard equations.
Activity
Math2

Math2.org: Trigonometry Functions

For Students 9th - 10th Standards
A complete look at trig functions. From an "overview," page giving general definitions and important vocab words, to a listing of the 12 trig functions, to an explanation of the three modes used in trigonometry, to the procedures of how...
Graphic
Other

Gobierno De Navarra: Trigonometria

For Students 9th - 10th
Use these interactive activities as a supplementary material to visualize some basic concept of Trigonometry.
Whiteboard
ClassFlow

Class Flow: Trigonometric Equations With Multiple Angles

For Teachers 9th - 10th
[Free Registration/Login Required] Students will use a number of strategies (including Algebra II and properties of conjunction techniques) to find all solutions for trigonometric equations using multiple angles.
Article
Other

Lifewire: Excel Tan Function: How to Find the Tangent Angle

For Students 11th - 12th
This article shows you how to find the tangent angle using Excel. You may be able to accomplish this on a scientific calculator, but if you don't have one handy, Excel can help you make these calculations better than anything else.
Activity
Interactive Mathematics

Interactive Mathematics: Trigonometric Functions

For Students 9th - 10th Standards
This is a excellent review lesson about trigonometric functions of any angle. Good examples here.

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