# Glossary

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a number which combined with its inverse results in the identity 1, e.g. 4 × ¼ = 1.

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a graph in which you replace the x-values with the y-values and the y...

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a function that produces the size of an angle, given one of the angle's trigonometric ratios: If...

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if one variable increases, the other variable decreases at a fixed rate.

single or double inverted commas (also known as quotation marks) are a set of punctuation marks...