garrett is painting a prop for his school play. the prop is a rectangle that measures 5.75 feet by 7.25 feet. about how much area will he need to paint?

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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.