Asubmarine is 40 feet below sea level. it dives to a point 250 feet lower. represent this distance below sea level as an integer.

I think the answer is 290 feet below sea level or -290

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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.