cosine是什么意思

音标:英 ['kəʊsaɪn]美 ['koʊsaɪn]

余弦[电] 余弦

ratio of the adjacent side to the hypotenuse of a right-angled triangle

cosine的用法和例句：

1. I still don't know iodine from cosine.

我还是分不清余弦和碘[发音相近]

2. Coefficients for sine on this monitor cosine on that one.

根据这个荧幕的正弦系数 搭配另一个荧幕的余弦

3. And so the square of sine plus cosine equals one.

所以sin2 + cos = 1

4. Now that we've specified arbitrary angles, we can define their sines and cosines.

既然已经指定了钝角 我们就可以定义它们的正弦和余弦了

5. Sine 2 theta equals 2 sine theta cosine theta.

sin2θ=2sinθcosθ