Khan Academy
Khan Academy: Geometry: Ca Geometry: More Trig
The video tutorial [12:21] demonstrates solutions to problems #66-70 of California Geometry released state test questions. Problems address basic trigonometry ratios, 30-60-90 triangles.
Khan Academy
Khan Academy: Ca Geometry: Basic Trigonometry
Demonstrates solutions to problems #61-65 of California Geometry released state test questions. Problems address the equation of a circle, basic trigonometry. [11:04]
Sophia Learning
Sophia: Trigonometric Derivatives: Lesson 2
This lesson states the rules for finding the derivative of sine, cosine, and tangent, and provides a few examples. It is 2 of 4 in the series titled "Trigonometric Derivatives."
Other
Mathematics Exemplified: Inverse Trigonometric Functions
This YouTube video provides a detailed explanation of inverse trigonometric functions including the composition of trigonometric functions.
Sophia Learning
Sophia: Trigonometic Notation: Lesson 3
Different ways of noting angles and trigonometric functions are discussed in this lesson. It is 3 of 5 in the series titled "Trigonometic Notation."
Sophia Learning
Sophia: Trigonometric Function Tables: Lesson 1
The use of tables to find the value for a trigonometric function of a specific angle is discussed here. This lesson is 1 of 5 in the series titled "Trigonometric Function Tables."
Sophia Learning
Sophia: Writing the Equation for Transformed Sine and Cosine: Lesson 3
This lesson explain how to write the equations for sine and cosine functions, based on their transformations. It is 3 of 7 in the series titled "Writing the Equation for Transformed Sine and Cosine."
Khan Academy
Khan Academy: Calculator to Evaluate a Trig Function
Worked example showing how to use typical calculators to evaluate trigonometric functions.
Khan Academy
Khan Academy: Basic Trigonometry: Example: Using Soh Cah Toa
Worked example evaluating sine and cosine using soh cah toa definition. [4:04]
Khan Academy
Khan Academy: Factoring Quadratics: Example 2: Factoring by Grouping
Factoring trinomials by grouping.
Khan Academy
Khan Academy: Basic Trigonometric Ratios: Using Trig Functions Part Ii
A couple of more examples of using Trig functions to solve the sides of a triangle. This video use the basic trigonometric functions to determine unknown side lengths of a right triangle. Example shows using trigonometry as well as the...
Khan Academy
Khan Academy: Graphs of Trig Functions: Graphing Trig Functions
Analyzing the amplitude and periods of the sine and cosine functions.
Khan Academy
Khan Academy: Basic Trigonometric Ratios: Example: Solving a 30 60 90 Triangle
This worked example can be done without trigonometry, but we do show how knowledge of 30-60-90 triangles can be helpful when evaluating trig functions.
Khan Academy
Khan Academy: Basic Trigonometric Ratios: Using Trig Functions
Video using the basic trigonometric functions to find the length of a side in a right triangle. Examples are given with angle measures in radians.
Khan Academy
Khan Academy: Factoring Quadratics: Example 4: Factoring by Grouping
Factoring trinomials by grouping.
Khan Academy
Khan Academy: Unit Circle: Unit Circle Definition of Trig Functions
In this video tutorial students extend SOH CAH TOA trigonometric relationships so that we can define trig functions for a broader class of angles.
Khan Academy
Khan Academy: Trig Substitution: Trig Substitution With Tangent
Students can watch a short video to review using the tangent for trig substitution.
Khan Academy
Khan Academy: Trig to Solve the Sides and Angles of a Right Triangle
Worked example using trigonometry to solve for the lengths of the sides of a right triangle given one of the non-right angles.
Khan Academy
Khan Academy: Using Trig to Solve for Missing Information
Worked example using trig ratios to solve for missing information and evaluate other trig ratios.
Khan Academy
Khan Academy: Example: Trig Function Values Using Unit Circle Definition
Worked example that uses the unit circle definition to evaluate trig functions. [11:24]
Khan Academy
Khan Academy: Amplitude and Period Cosine Transformations
Visualizing changes in amplitude and period for a cosine function
Khan Academy
Khan Academy: Graphs of Trig Functions: Example: Intersection of Sine and Cosine
A video showing where the graphs of sin and cos intersect. [11:07]
Khan Academy
Khan Academy: Basic Trigonometric Ratios: Basic Trigonometry Ii
A few more examples using SOH CAH TOA. Examples of finding sine, cosine and tangent for two different right triangles, including finding side lengths by the Pythagorean Theorem and rationalizing the denominator.
Khan Academy
Khan Academy: Geometry: Basic Trigonometry
Problems address the equation of a circle, basic trignometry.