Mary said that the temperature outside on two differnt days had an absolute value 20. Kate said she was wrong because the temperature on those two days were different. could Mary be correct? Explain the reasoning.

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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.