Trigonometric Functions Teacher Resources

The concept of the cosine of an angle is introduced here. This lesson [3:32] is 4 of 4 in the series titled "Cosine."

[Free Registration/Login Required] Students will determine the angle of depression using a diagram with a helicopter. Click learn more to watch a video and click challenge me to answer a practice question.

Solve for an unknown angle of a right triangle using the inverse cosine. Assess learning with a quiz.

Solve for an unknown angle of a right triangle using the inverse tangent. Take a quiz to assess learning.

Using the unit circle definition to think about the signs of the sine and the cosecant of a negative angle. [3:19]

Find the implicit derivative of the given equation.

Rather than dividing a circle into some number of segments (like 360 degrees), mathematicians often prefer to measure angles using the circumference of a unit circle - a circle with radius 1. This way of measuring angles is called...

Equations that include trigonometric functions are introduced here. This lesson is 2 of 5 in the series titled "Trigonometric Equations."

The concept of using trigonometric functions as a substitution for variable or expressions in an integral is discussed here. This lesson is 2 of 5 in the series titled "Trigonometric Substitution."

The concept of using trigonometric functions as a substitution for variable or expressions in an integral is discussed here. This lesson is 5 of 5 in the series titled "Trigonometric Substitution."

Equations that include trigonometric functions are introduced here. This lesson is 3 of 5 in the series titled "Trigonometric Equations."

The concept of using trigonometric functions as a substitution for variable or expressions in an integral is discussed here. This lesson is 3 of 5 in the series titled "Trigonometric Substitution."

Understand how trigonometric functions can model periodic behavior. See the application of periodic behavior, amplitude, frequency in sound waves. Make sure to turn up your sound to load an audio file to play the given tone of the...

Rewriting trigonometric functions in terms of sine and cosine is shown here as a tool for solving trigonometric equations. This lesson is 3 of 7 in the series titled "Solving an Equation by Converting to Sine and Cosine."

Rewriting trigonometric functions in terms of sine and cosine is shown here as a tool for solving trigonometric equations. This lesson is 5 of 7 in the series titled "Solving an Equation by Converting to Sine and Cosine."

Rewriting trigonometric functions in terms of sine and cosine is shown here as a tool for solving trigonometric equations. This lesson is 6 of 7 in the series titled "Solving an Equation by Converting to Sine and Cosine."

Rewriting trigonometric functions in terms of sine and cosine is shown here as a tool for solving trigonometric equations. This lesson is 1 of 7 in the series titled "Solving an Equation by Converting to Sine and Cosine."

Rewriting trigonometric functions in terms of sine and cosine is shown here as a tool for solving trigonometric equations. This lesson is 7 of 7 in the series titled "Solving an Equation by Converting to Sine and Cosine."

Begin your studies of the Fourier Series with this lesson. It contains information on all of the essentials of getting started, including trigonometric functions, continuity, periodic functions, and more.

The practice problem asks students to use the given figure and a ruler to determine the value of trigonometric functions. The example is available in PDF format.

The practice problem asks students to use the given figure and a ruler to determine the value of trigonometric functions. The example is available in PDF format.

[Free Registration/Login Required] Students explore trigonometric functions using the interactive features of Activstudio. Students apply their understanding of trigonometric sense to determine the side lengths and angles of various...

This lesson explores the relationships between triangles made on a unit circle and the six trigonometric functions. It is 3 of 5 in the series titled "Triangles in the Unit Circle."

This lesson explores the relationships between triangles made on a unit circle and the six trigonometric functions. It is 4 of 5 in the series titled "Triangles in the Unit Circle."