Can someone tell my what cos, sin and tan actually measure?
In: Mathematics
People realized that if you measured the sides of a right triangle and divided the side lengths by each other, you always got the same numbers for triangles that were the same shape, no matter how big or small they were. They gave names to the three ways you could divide three side lengths and wrote them down in tables, one row for every possible angle. Then they taught computers how to remember them.
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