Trigonometric Identities Teaching Resources :: 841

Khan Academy

Khan Academy: Solve for an Angle in Right Triangles

For Students 9th - 10th Standards

Given two sides in a right triangle, find one of the acute angles using trigonometry. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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CK-12 Foundation

Ck 12: Trigonometry: Secant, Cosecant, and Cotangent Functions

For Students 10th - 12th Standards

[Free Registration/Login may be required to access all resource tools.] Calculate the secant, cosecant, and cotangent functions using the sides of a triangle.

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CK-12 Foundation

Ck 12: Trigonometry: Sine and Cosecant Graphs

For Students 10th - 12th Standards

[Free Registration/Login may be required to access all resource tools.] Define the sine and cosecant graphs using a unit circle.

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Texas Instruments

Texas Instruments: Approximation of Pi Using Archimedes' Method

For Teachers 9th - 10th

Students can use trigonometric ratios to discover the circumference of regular polygons inscribed within and circumscribed about a circle. These ratios will help approximate a value of pi.

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CK-12 Foundation

Ck 12: Flex Book: Trigonometry

For Teachers 9th - 10th

[Free Registration/Login may be required to access all resource tools.] Six-chapter book that introduces students to trigonometry. Topics include right angles, circular functions, trigonometric identities, vectors, and polar equations.

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Lawrence Hall of Science

The Math Page: Trigonometry: Trignometry of Right Triangles

For Students 9th - 10th Standards

Here is a site that clearly and thoroughly explains the trigonometry of a right triangle, including finding the values of all six trig functions given a single value. There are example problems solved, problems for the student to...

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Texas Education Agency

Texas Gateway: 4.5 Normal, Tension, and Other Examples of Force

For Students 11th - 12th

By the end of this section, you will be able to define normal and tension forces, apply Newton's laws of motion to solve problems involving a variety of forces, and use trigonometric identities to resolve weight into components.

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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.

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Khan Academy

Khan Academy: Solve Sinusoidal Equations (Basic)

For Students 9th - 10th

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.

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Khan Academy

Khan Academy: Sinusoidal Models Word Problems

For Students 9th - 10th

Solve word problems that involve real-world contexts that are modeled by sinusoidal functions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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Khan Academy

Khan Academy: Solve Sinusoidal Equations

For Students 9th - 10th

Solve equations of the form a*sin(bx+c)=d or a*cos(bx+c)=d where a, b, c, and d are any number. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.

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Wolfram Research

Wolfram Math World: Integral

For Students 9th - 10th

Good site from MathWorld.com on integration with links to the topics and information needed to help the student understand integration. This site gives the fundamental rules of integration including the integration of the trigonometric...

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Government of Alberta

Learn Alberta: Exploring Similarity and Congruence

For Students 6th - 8th Standards

Begin by watching this captivating video showing how the concepts of similarity and congruence are found in road signs. Following the video [1:27], an interactive applet allows students to resize, flip, move and rotate triangles to...

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Other

Achieve: Miniature Golf Design Task [Pdf]

For Teachers 9th - 10th

In this task students are asked to combine numerous skills to create a miniature golf hole. Students create a scale drawing of the hole, calculate the area of the hole and determine the percentage of total area used. In addition,...

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Cuemath

Cuemath: Cosine Function

For Students 9th - 10th Standards

Learn more about cosine functions by exploring unit circles, and angles, how to use them, and their various applications along with some solved examples and a few interactive questions to test your understanding.

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Cuemath

Cuemath: Sine Law

For Students 9th - 10th Standards

This comprehensive guide explores the topic of sine law, by finding answers to questions like what is the law of sines, what are the applications of sine law, and proof of the sine law. Includes solved examples and practice questions.

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Math Words

Math Words: Derivative Rules

For Students 9th - 10th

This site offers fourteen rules for differentiation-- anything from a constant function to logarithmic functions.

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Khan Academy

Khan Academy: Algebra Ii: Use the Pythagorean Identity

For Students 9th - 10th Standards

Given the sine (or cosine) of an angle, find its cosine (or sine) using the Pythagorean identity. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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Windstream

Ojk's Precalculus Study Page: Area of a Triangle

For Students 9th - 10th Standards

An introduction to finding the area of a triangle using the sine function. Includes several pictures and examples.

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CK-12 Foundation

Ck 12: Trigonometry: Sine Sum and Difference Formulas

For Students 10th - 12th Standards

[Free Registration/Login may be required to access all resource tools.] Sine of a sum or difference related to a set of cosine and sine functions. Here you'll learn to rewrite sine functions with addition or subtraction in their...

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CK-12 Foundation

Ck 12: Trigonometry: Cosine Sum and Difference Formulas

For Students 10th - 12th Standards

[Free Registration/Login may be required to access all resource tools.] Examples, videos, and practice problems covering cosine of a sum or difference related to a set of cosine and sine functions. Here you'll learn to rewrite cosine...

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