Radians definitions Flashcards
Radians definitions
You can tap to flip the card.
Control buttons has been changed to "navigation" mode.
1/15Skip to main content
Radian A unit for measuring angles based on the arc length equal to the radius of a circle, approximately 57 degrees. Degree A traditional unit for measuring angles, with a full circle divided into 360 equal parts. Full Circle An angle measuring 360 degrees or 2π radians, representing one complete revolution around a circle. Circumference The total distance around a circle, calculated as 2π times the radius. Radius The straight-line distance from the center of a circle to any point on its edge. Pi A mathematical constant, approximately 3.14159, representing the ratio of a circle's circumference to its diameter. Conversion Formula A mathematical expression used to change angle measurements between degrees and radians. Fraction of Pi A way to express radian measures as multiples or divisions of π, such as π/2 or 3π/2. Multiple of Pi A radian measure expressed as a whole number times π, like 2π or π. Unit Cancellation A process in conversions where matching units in numerators and denominators are eliminated to yield the desired unit. Theta A common variable used to represent an unknown or general angle in mathematical expressions. Arc Length The distance measured along the curved line forming part of the circumference of a circle. Angle Measure A numerical value that quantifies the size of an angle, typically in degrees or radians. Quarter Circle An angle equal to one-fourth of a full circle, or 90 degrees, which is π/2 radians. Half Circle An angle equal to half of a full circle, or 180 degrees, which is π radians.
5:04
