每一个组件都是一种算数指令，诸如加、减、乘、余弦、正弦。

Each module was an arithmetical command such as add, subtract, multiply, cosine, sine.

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例如，清单3展示了一个样式表，它生成角度的正弦、余弦和正切值。

For example, Listing 3 shows a stylesheet that generates sines, cosines, and tangents for the angles.

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我还听到了余弦，还有正弦。

I hear some cosines. I hear some sines.

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