|
- Unit circle (video) | Trigonometry | Khan Academy
Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers
- Trigonometric functions | Trigonometry | Math | Khan Academy
Discover how to measure angles, distances, and heights using trigonometric ratios and the unit circle Learn how to use sine, cosine, and tangent to solve real-world problems involving triangles and circular motion
- Unit circle (practice) | Trigonometry | Khan Academy
For each point on the unit circle, select the angle that corresponds to it Click each dot on the image to select an answer
- Unit circle (video) | Khan Academy
Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers
- Unit circle trigonometry | Lesson (article) | Khan Academy
What are unit circle trigonometry problems? The problems in this lesson involve circles and angle measures in radians, a unit for angle measure much like degrees
- Sine cosine identities: symmetry (video) | Khan Academy
Sal finds several trigonometric identities for sine and cosine by considering horizontal and vertical symmetries of the unit circle
- Tangent identities: symmetry (video) | Khan Academy
In short, the unit circle of an extension of the methods used to figure out the angles of right triangles Sal has many videos explaining this very process on his Trigonometry course if anyone is interested
- Trig values of π 4 (video) | Trigonometry | Khan Academy
Sal finds the trigonometric values of π 4 using the unit-circle definition Created by Sal Khan
|
|
|