弧度 (hú dù) — radian (unit of angular measure)
Definition
A unit of angle measurement equal to about 57.3°, where 2π 弧度 make a full circle. Used in math and science, not in everyday descriptions of angles.
classifier
radian (unit of angular measure)
Examples
- 弧度57.3。Yí gè hú dù dà yuē děng yú 57. 3 dù.One radian is approximately equal to 57.3 degrees.
- 弧度。Zhè ge jiǎo de dà xiǎo shì sān hú dù.The size of this angle is three radians.
- π弧度。Bàn yuán de jiǎo dù shì π hú dù.The angle of a semicircle is π radians.
Appears in
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