Convert grad [^g] to radian [rad] Online | Free angle Converter

Radian [rad]


A radian is the standard SI unit for measuring angles based on the radius of a circle.



  • Definition:

    One radian is the angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle.



  • Relation to degrees:



1 radian=180π57.29581 \text{ radian} = \frac{180}{\pi} \approx 57.2958^\circ
360=2π radians360^\circ = 2\pi \text{ radians}

  • Usage:



  • Commonly used in mathematics, physics, and engineering for angular measurements.



  • Preferred in calculus and trigonometry because it simplifies many formulas.



  • Summary:

    The radian measures angles naturally in terms of circle geometry and is the standard unit for angles in the International System of Units (SI).



Radian [rad]


A radian is the standard SI unit for measuring angles based on the radius of a circle.



  • Definition:

    One radian is the angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle.



  • Relation to degrees:



1 radian=180π57.29581 \text{ radian} = \frac{180}{\pi} \approx 57.2958^\circ
360=2π radians360^\circ = 2\pi \text{ radians}

  • Usage:



  • Commonly used in mathematics, physics, and engineering for angular measurements.



  • Preferred in calculus and trigonometry because it simplifies many formulas.



  • Summary:

    The radian measures angles naturally in terms of circle geometry and is the standard unit for angles in the International System of Units (SI).




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