Arccosine

Definition of Arccosine

• Arccosine is the inverse function of cosine. It is also written as arccos or

If y = cos x, then x = arccos y.

Examples of Arccosine

or

This means that the angle 30° has cosine equal to.

         

Solved Example on Arccosine

Choices:

A. 0.3

B. 0.2

C. 0.5

D. 0.6

Correct Answer: D

Solution:

Step 1: Recall that cos(arccos x) = x, for .

                                        

Related Terms for Arccosine

• Cosine

• Inverse Function

 

Additional Links for Arccosine

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