Trigonometry
Explore angles and the unit circle; identities and equations; triangles and oscillations. Concepts and connections are available independently of video coverage.
FOLLOW AN IDEA
Tangent function
Tangent is sine divided by cosine where cosine is nonzero.
Explore concept graph · Explore connected videos
Different ways to understand it
No reviewed video yet. Explore the concept in a map or suggest a resource. Suggest a video
More concepts to explore
Radians
Radian measure is arc length divided by radius.
Sine and cosine
Sine and cosine are the vertical and horizontal coordinates on the unit circle.
Angle addition formulas
Addition formulas express trigonometric functions of summed angles using individual angles.
Complex exponentials
Euler's formula links complex exponentials to cosine and sine for real angles.
Inverse trigonometric functions
Restricted domains make trigonometric functions invertible with specified principal-value ranges.
Knowledge connections
- Sine and cosine · Related · Map context
- Radians · Related · Map context