Arc cosine
反余弦
🧩 词语组成解析
arc
[ɑ:k]
n. 综合症状;弧（度）;天穹;电弧，弧光。;
vi. 形成拱状物;循弧线行进;
abbr. American Red Cross. 美国红十字会;
cosine
['kəusain]
n. 余弦;
🗣️ 情景例句
Put your hands up.
把手举起来。
Excuse me to have kept you waiting.
对不起让你就等了。
What were you thinking?
你脑子进水啊？