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How Do You Find the Cosine of an Angle in a Right Triangle? Instructional VideoHow Do You Find the Cosine of an Angle in a Right Triangle? Instructional Video
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Instructional Video

How Do You Find the Cosine of an Angle in a Right Triangle?

Curated and Reviewed by Lesson Planet

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 draws a diagram and labels all the sides and angles. She then explains how to apply the formula to find cos(A).

4 Views 1 Download
Concepts

angles, cosine, trigonometric ratios, hypotenuse, right triangles, triangles, Trigonometry

Additional Tags

right triangle, adjacent side, hypotenuse, cosine, trigonometric ratio, angle, math
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Resource Details

Grade
7th - 11th
Subjects
Math
2 more...
Resource Type
Instructional Videos
Media Length
3:21
Audience
For Teacher Use
Instructional Strategy
Flipped Classroom
Usage Permissions
Fine Print

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