Find the area of the shape shown below.

11/2.2 = 5 inches for the length 8.5/2.2= 3.86 inches for the width

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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.