Used mainly in mathematical context, often in trigonometry or geometry lessons. The cosine of 30 degrees is equal to the square root of 3 divided by 2.
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Not an Average Word
Uncommon in everyday language, mostly found in academic or technical settings. In physics class, we learned that cosine helps determine the components of a vector.
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Pronunciation Clue
Pronounced as 'koh-sine', may be mistaken for 'cosign' which is a different word. To solve the problem, first calculate the cosine, making sure not to confuse it with cosign.