By using the trigonometric ratios in a right triangle, the instructor derives definitions for cosecant, secant, and cotangent.

In this problem you are given an angle of elevation and one side of a right triangle to find a missing side. Watch the instructor explain how to use the tangent ratio formula to solve this problem.

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.

What's the angle of elevation? Using several tangent formulas, the instructor calculates the angle of elevation. He has two examples that are engaging.

Trigonometry learners can get confused about the relationships in a right triangle. This video clearly lays out how to solve for the length of one side of a triangle using cosine. Though not engaging, it is educational. Have your...

It's important to be exact. Scholars watch a video that provides the exact trigonometric values of sine, cosine, and tangent for 0-, 30-, 45-, 60-, and 90-degree angles. The video also highlights a pattern to help remember the values.

Sign on to learn about sine. Scholars view a video that explains the sine ratio. It shows how the ratio changes depending on the angle in question.

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,...

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...

What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find cosine(A) in the given right triangle. Use the ratio of the adjacent side divided by the hypotenuse to find cos(A). The instructor...

Using the right triangle ratio definition of cosine, this video defines the secant ratio.

What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side divided by the hypotenuse to find sin(A). The instructor...

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.

Does watching a person do a math problem help you understand a mathematical concept? If it does then this clip will be a great help. The tutor in this clip completes a geometry problem involving tangents, circles, and the Pythagorean...

What do a secant, chord, diameter, and radius all have in common? They are all components or measurements of a circle! This clip quickly defines each of these terms using verbal, written, and diagram examples.

One given angle and one given length equals an unknown height. What? Here's a word problem that can be solved given two pieces of information by using the correct formula. Watch the instructor explain how to use the tangent ratio formula...

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...

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]

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.

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]

Demonstrates solutions to problems #61-65 of California Geometry released state test questions. Problems address the equation of a circle, basic trigonometry. [11:04]

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...

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.

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.