radian
「radian」的意思
n. [数]弧度; n. （Radian）人名；（罗）拉迪安
n.弧度
「radian」的用法
radian弧度 - 数学中用于测量角的单位
「radian」的例句
The angle between two lines is 45 degrees.
两条线之间的角度是45度。
The radian measure of an angle is the length of the arc it subtends.
一个角的弧度测量值是它所对的弧长。
One radian is approximately equal to 57.2958 degrees.
一弧度大约等于57.2958度。
The radian measure of a full circle is 2π radians.
一个完整圆的弧度测量值是2π弧度。
In calculus, the derivative of sin(x) is cos(x).
在微积分中，sin(x)的导数是cos(x)。
The radian measure of an angle in a right triangle is the ratio of the length of the opposite side to the hypotenuse.
在直角三角形中，一个角的弧度测量值是它对边长度与斜边长度的比值。
One radian is equal to 180/π degrees.
一弧度等于180/π度。
In physics, angular velocity is measured in radians per second.
在物理学中，角速度以每秒弧度为单位测量。
The radian measure of an angle in a unit circle is equal to the length of the arc it subtends.
在一个单位圆中，一个角的弧度测量值等于它所对的弧长。