
Unit circle (video) | Trigonometry | Khan Academy
Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers.
DNA function & structure (with diagram) (article) | Khan Academy
Ribose instead of deoxyribose is drawn in the dehydration synthesis diagram. It says "The nucleotides forming each DNA strand are connected by noncovalent bonds, called hydrogen …
Circles | Geometry (all content) | Math | Khan Academy
Unit 14: Circles About this unit Explore, prove, and apply important properties of circles that have to do with things like arc length, radians, inscribed angles, and tangents.
The complex plane (article) | Khan Academy
Imagine a big circle with 2 small circles inside it that don't intersect with each other, that would be the set of the Complex number (big circle) and the Real and Imaginary sets (small circles).
Two-way frequency tables and Venn diagrams - Khan Academy
One way to do it is using a Venn diagram. So let me draw a Venn diagram. So Venn diagram is one way to represent it. The way it's typically done, the convention, is that you would make a …
Labeling parts of a circle (video) | Khan Academy
Radius, diameter, center, and circumference--all are parts of a circle. Let's go through each and understand how they are defined.
Sine & cosine identities: periodicity (video) | Khan Academy
Sal finds trigonometric identities for sine and cosine by considering angle rotations on the unit circle.
Circles | High school geometry | Math | Khan Academy
About this unit Explore, prove, and apply important properties of circles that have to do with things like arc length, radians, inscribed angles, and tangents.
Graph of y=tan(x) (video) | Trigonometry | Khan Academy
Sal draws the graph of the tangent function based on the unit circle definition of the function.
Cell parts and functions (article) | Khan Academy
Cell diagrams showing a typical animal cell and plant cell. Image created with Biorender.com.