A can holds 20 red balls with blue dots, 15 red balls without dots, 30 white balls with blue dots, and 25 white balls without dots. Find P (white given no dots)

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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.

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