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...
Curated OER
How Do You Find a Missing Side of a Right Triangle Using Cosine?
Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by...
Curated OER
SOH CAH TOA
SOHCAHTOA is explained by three enthusiastic students in this short video clip. They use a white board to show different examples solving for sin, cosign, and tangent. Note: Video footage is a little shaky.
Curated OER
Determining the Angle of Elevation Using Tangent
What's the angle of elevation? Using several tangent formulas, the instructor calculates the angle of elevation. He has two examples that are engaging.
Curated OER
How Do You Find a Missing Side of a Right Triangle Using Tangent?
Identify the variables, identify the given values and use a formula to find the missing length in this right triangle problem. What formula? The tangent ratio, which is normally used to show a ratio between two sides of a right triangle,...
Curated OER
How Do You Find the Tangent of an Angle in a Right Triangle?
What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find tangent(A) in the given right triangle. Use the ratio of the opposite side divided by the adjacent side to find tan(A). The...
Curated OER
Adjacent Right Triangle Problems
The instructor identifies the terms used to solve for the angle of adjacent right triangles. He does not have an example to solve a problem.