正弦 meaning in English
[数学] sine
◇正弦尺 sine protractor; 正弦曲线 sine curve; sinusoid
Examples
- The cosine rather than the sine is customarily used in this case .
在这种情况下，习惯上用余弦函数而不是正弦函数。 - We derive the addition formulas for sine and cosine from the arithmetic of complex numbers .
用复数算术推导了正弦，余弦的加法公式。 - The expression for g can be rewritten in terms of trigonometric sines and cosines .
关于g的表达式可以重写成三角函数的正弦和余弦形式。 - Let's now examine the simplest wave form where the profile is a sine or cosine curve .
现在让我们来考察最简单的波形，它的剖面图是正弦或余弦曲线。 - If a sinusoidal current is sent through a moving coil galvanometer, the meter reads zero .
如果将一正弦电流通入动圈式电流计，那么这电流计的读数为零。