Tim recorded that 27 out of 63 customers used a shoping cart at the grocery store. based on these results, about how many customers out of 350 can be expected to use a shoping cart? a) 110
b) 260
c) 90
d) 150

What mathematical statement is missing ? ? the answer is b

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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.