Khan Academy
Khan Academy: Trigonometry: More Trig Graphs
Video about translating between the graph and equation of trigonometric functions. Examples consist of writing the equation a sine function from its graph and graphing a cosine function from its equation. [5:13]
Khan Academy
Khan Academy: Trigonometry: Graphs of Trig Functions
Video exploring the graphs of the basic trigonometric functions. Effects of changes in the equation of the sine function to the period and the amplitude of the graph are shown. Includes link to additional practice problems. [10:17]
Khan Academy
Khan Academy: Trigonometry: Determing the Equation of a Trigonometric Function
Video about finding the equation of a trigonometric function from its graph. Two examples are sine functions and one example is a cosine function [9:52]
Khan Academy
Khan Academy: Trigonometry: Graphing Trig Functions
Video showing how to graph the sine and cosine functions from their equations with modifications to the amplitude and period. Also gives an example of determining the trigonometric function using the features of the graph. Includes link...
Math TV
Math tv.com: Trigonometric Functions: Find Six Trigonometric Functions
Students explore the definitions for the six trigonometric functions. The learning resource consists of a video tutorial, examples, and a worksheet with practice problems. In the left hand menu, click Trigonometry, Trigonometric Functions.
Sophia Learning
Sophia: Cosine: Lesson 2
The concept of the cosine of an angle is introduced here. This lesson [3:19] is 2 of 4 in the series titled "Cosine."
Sophia Learning
Sophia: Cosine: Lesson 4
The concept of the cosine of an angle is introduced here. This lesson [3:32] is 4 of 4 in the series titled "Cosine."
Sophia Learning
Sophia: Identifying Trigonometric Ratios From a Right Triangle
Use a right triangle to identify the six trigonometric ratios such as cosine, sine, tangent, co-secant, secant, and cotangent. Assess learning with a quiz. [6:54]
Sophia Learning
Sophia: Inverse Cosine
Solve for an unknown angle of a right triangle using the inverse cosine. Assess learning with a quiz.
Sophia Learning
Sophia: Inverse Tangent
Solve for an unknown angle of a right triangle using the inverse tangent. Take a quiz to assess learning.
Khan Academy
Khan Academy: Trig Challenge Problem: Verify Identities
Sal is given a diagram with multiple right triangles and is asked to verify identities relating to trig ratios in those triangles.
Khan Academy
Khan Academy: Trig Challenge Problem: Trig Values & Side Ratios
Sal is given a diagram with multiple right triangles and is asked to match different expressions with different trig values.
Khan Academy
Khan Academy: Trigonometric Ratios in Right Triangles
Sal shows a few examples where he starts with the two legs of a right triangle and he finds the trig ratios of one of the acute angles.
Khan Academy
Khan Academy: Intro to the Trigonometric Ratios
Sal introduces sine, cosine, and tangent, and gives an example of finding them for a given right triangle.
Khan Academy
Khan Academy: Solving for a Side in Right Triangles With Trigonometry
Sal is given a right triangle with an acute angle of 65 degrees and a leg of 5 units, and he uses trigonometry to find the two missing sides.
Sophia Learning
Sophia: Cosecant: Lesson 5
The concept of the cosecant of an angle is introduced in this lesson. It is 5 of 5 in the series titled "Cosecant." [2:33]
Sophia Learning
Sophia: Cosecant: Lesson 1
The concept of the cosecant of an angle is introduced in this lesson. It is 1 of 5 in the series titled "Cosecant." [3:17]
Sophia Learning
Sophia: Cosecant and Sine: Lesson 1
Relationships between the graphs of cosecant and sine are explored in this lesson. It is 1 of 5 in the series titled "Cosecant and Sine." [3:03]
Sophia Learning
Sophia: Cosine: Lesson 3
The concept of the cosine of an angle is introduced here. This lesson [4:11] is 3 of 4 in the series titled "Cosine."
Sophia Learning
Sophia: Cotangent: Lesson 4
This lesson introduces the concept of the cotangent of an angle. It is 4 of 5 in the series titled "Cotangent." [2:21]
Sophia Learning
Sophia: Cotangent: Lesson 1
This lesson introduces the concept of the cotangent of an angle. It is 1 of 5 in the series titled "Cotangent." [3;11]
Sophia Learning
Sophia: Secant: Lesson 1
This lesson introduces the concept of the secant of an angle. It is 1 of 5 in the series titled "Secant."
Sophia Learning
Sophia: Sine: Lesson 5
The concept of the sine of an angle is introduced here. This lesson is 5 of 6 in the series titled "Sine."
Sophia Learning
Sophia: Sine: Lesson 6
The concept of the sine of an angle is introduced here. This lesson is 6 of 6 in the series titled "Sine."