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inverse cosine

American

noun

Trigonometry.

First recorded in 1905–10

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inverse cosine

The inverse cosine is unique over this range, so we are then able to determine the measure of the angle θ.

From Textbooks ● Mar. 30, 2016

TRY IT #1 Given write a relation involving the inverse cosine.

From Textbooks ● Feb. 13, 2015

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