radians
Pi-based angle units
Radians are units for measuring angles, used alongside degrees.
Where degrees divide a circle into 360 parts, radians divide it based on the circle's radius—a full circle is 2π radians, a half circle is π radians.
Radians simplify many mathematical formulas, making them standard in trigonometry, calculus, and physics: Convert 45 degrees to radians.
Units of measurement
- piCircle's fundamental ratio
- tauGreek nineteenth letter
- sineOpposite over hypotenuse
- cosineRatio in triangle math
tangent · arc · angular · conversion · cotangent · secant · cosecant · sinusoid
Violent governmental overthrow
- sectorDistinct division of whole
- gyroscopeSpinning disc measuring orientation
- torqueRotational force measurement
- spinRapid rotation around axis
axis · centripetal · rotational · orbit · turn · cycle
Individual part or measure
- steradianSI solid angle unit
- milliradianOne-thousandth radian unit
- protractorAngle-measuring instrument
- precisionAccuracy of measurement
dimensionless · ratio · quadrant · sextant · subtended
Function's rate of change
- integralAntiderivative or crucial component
- differentiationRecognizing meaningful differences
- limitMaximum allowed extent
- infinitesimalQuantity approaching zero
degrees
Units of measurement
cosine · tangent · arc · angular · conversion · cotangent · secant · cosecant · sinusoid · periodic
revolution
Violent governmental overthrow
- sectorDistinct division of whole
- gyroscopeSpinning disc measuring orientation
- torqueRotational force measurement
spin · axis · centripetal · rotational · orbit · turn · cycle
unit
Individual part or measure
- steradianSI solid angle unit
- milliradianOne-thousandth radian unit
- protractorAngle-measuring instrument
precision · dimensionless · ratio · quadrant · sextant · subtended
derivative
Function's rate of change
- integralAntiderivative or crucial component
- differentiationRecognizing meaningful differences
- limitMaximum allowed extent
- mathaddition, subtraction, multiplication, division, algebra
- math conceptsangle, numbers, algebra, circle, equations
- anglesacute angle, angle, obtuse angle, right angle, straight angle
- circlesfull circle, circle, radius, circumference, pie chart
- rotationrotation, spin, axis of rotation, rotational motion, angular momentum
- trigonometrysine, cosine, tangent, secant, cosecant
- radiant heatingSurface-emitted thermal energy
- radiant heatersDevices emitting warming electromagnetic waves
- steam radiatorVapor-heated metal fixture
- radiator capSeals engine coolant reservoir
- radiant heatElectromagnetic thermal energy transfer
- radiant glow
radiant, radiate, radiance, radiator, radiating, radiators, radiated, irradiate, radiates