Can someone tell my what cos, sin and tan actually measure?

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Can someone tell my what cos, sin and tan actually measure?

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* sin: how far up you go when you go one unit of distance along a slope of some angle (i.e., the vertical distance)
* cos: how far over you go when you go one unit of distance along a slope of some angle (i.e., the horizontal distance)
* tan: the slope expressed as rise over run

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