Introduction to Angles

This trigonometry video tutorial provides a basic introduction into angle measure. It explains the process of drawing angles in standard position in degrees. It discusses the difference between the initial side of an angle and its terminal side. In addition, it mentions the difference between an acute angle, right angle, obtuse angle, and a straight angle. This video contains plenty of examples and practice problems including drawing positive and negative angles in standard position.

Trigonometry – Free Formula Sheet:
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Trigonometry – Basic Introduction:

Introduction to Angles:

Radians and Degrees:

What Exactly Is a Radian?

Coterminal Angles:

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Decimal Degrees to DMS:

Arc Length of a Circle and Sector Area:

Linear Speed and Angular Velocity:

Clock to Angle Problems:

The Unit Circle:

How To Remember the Unit Circle Fast: