52. Meteorology The average low temperature for five consecutive days was -12°C. If the average low temperature after the sixth day was -13°C, was the low
temperature on the sixth day higher or lower than -12°C?

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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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A.5 is your answer to this problem