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Brian McLogan
Find the angle of elevation when given the length of a shadow
👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to...
Brian McLogan
Use the chain rule with sine to take the derivative
👉 Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative...
Brian McLogan
Learn how to find the missing side lengths of a 30 60 90 triangle
👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...
Brian McLogan
Evaluate limits with cosine and cotangent
👉 Learn how to evaluate the limit of a function involving trigonometric expressions. The limit of a function as the input variable of the function tends to a number/value is the number/value which the function approaches at that time....
Brian McLogan
Evaluate the limit using special trigonometric limit of cosine
👉 Learn how to evaluate the limit of a function involving trigonometric expressions. The limit of a function as the input variable of the function tends to a number/value is the number/value which the function approaches at that time....
Curated OER
Intro to the Trigonometric Ratios
This video introduces the basics of trigonometry. It starts by defining a right triangle and showing two different examples of finding the ratios of sine, cosine, and tangent using the SOH-CAH-TOA mnemonic. This resource could be used as...
Khan Academy
Khan Academy: Trigonometry: Ferris Wheel Trig Problem (Part 2)
Video continues and completes the solution to a word problem about people on a ferris wheel and their height above the ground. Solution includes graphing a cosine function by completing a table and plotting points. [9:08]
Khan Academy
Khan Academy: Trigonometry: Trigonometry Word Problems (Part 1)
Video containing the beginning of a solution to a navigation problem that uses trigonometry to find the missing length of a triangle. [9:57]
Khan Academy
Khan Academy: Trigonometry: Trigonometry Word Problems (Part 2)
Video continues and completes the solution to a navigation problem that uses trigonometry to find the missing length of a triangle. [2:51]
Khan Academy
Khan Academy: Trigonometry: Ferris Wheel Trig Problem
Video showing the beginning of a solution to a word problem about people on a ferris wheel and their height above the ground. Includes converting revolutions per minute to degrees per second. [7:21]
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: Using Trig Functions Part Ii
Continuation of video lesson using the basic trigonometric functions to determine unknown side lengths of a right triangle. Example shows using trigonometry as well as the Pythagorean Theorem to find the length of the third side of the...
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: 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. Includes link to additional practice problems. [10:03]
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...
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: Trigonometry: Basic Trigonometry Ii
Continuation of video lesson introducing the basic trigonometric ratios. Examples of finding sine, cosine and tangent for two different right triangles, including finding side lengths by the Pythagorean Theorem and rationalizing the...
Khan Academy
Khan Academy: Trigonometry: Basic Trigonometry
Video introducing the basic trigonometry ratios sine, cosine, and tangent. Examples are shown for the two acute angles of a right triangle. Includes link to additional practice problems. [9:17]
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]
Khan Academy
Khan Academy: Integration by Parts: Antiderivative Using Integration by Parts
In this video lesson students explore antiderivatives by using integration by parts.