The Inverse Cosine Function - Concept

Concept Concept (1)

Since cosine is not a one-to-one function, the domain must be limited to 0 to pi, which is called the restricted cosine function. The inverse cosine function is written as cos^-1(x) or arccos(x). Inverse functions swap x- and y-values, so the range of inverse cosine is 0 to pi and the domain is -1 to 1. When evaluating problems, use identities or start from the inside function.

Sample Sample Problems (3)

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The Inverse Cosine Function - Problem 1
Problem 1
How to define the inverse cosine function.
The Inverse Cosine Function - Problem 2
Problem 2
How to use apply the inverse identities for cosine.
The Inverse Cosine Function - Problem 3
Problem 3
How to graph a simple transformation of y = cos^-1(x) + pi/2