Why does a low range indicate precision in a measurement tool?

The answer is because precision refers to the closeness of the measured data with each other. Having a low range means that the data are not widely distributed. Range is the difference of the largest value to the smallest value. When the least data is very close to the largest data, then the range will be low or close to zero.

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.