Beki put some stamps into her stamp collection book she put 14 stamps on each page if she completely filled 16 pages how many stamps dod she put in the book

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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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