The unit circle definition of trigonometric function

In this video, Sal shows how the sine and cosine of an angle are defined on the unit circle. He inscribes a 30-60-90 triangle in the unit circle and explains how one can use SOH-CAH-TOA to find the coordinates on the circle.

Concepts

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cosine, trigonometric ratios, sine, unit circle, Trigonometry

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Additional Tags

Trigonometry, 30-60-90 degree triangle, soh-cah-toa, sin, cos sine, cosine, unit circle, math

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Resource Details

Grade

10th - 12th

Subjects

Math

2 more...

Resource Type

Instructional Videos

Media Length

9:04

Audiences

For Teacher Use

1 more...

Instructional Strategy

Flipped Classroom

Accessibility

Closed Captions

Usage Permissions

Creative Commons

BY-NC-SA: 3.0