What is cos of arccos(x)?

 

What is cos of arccos(x)?

Arccosine of cosine of x.

 

Since arccosine is the inverse function of cosine, the cosine of arccosine of x is equal to x:

cos( arccos x ) = x

x has values from -1 to 1:

x∈[-1,1]

 

Arccos function ►

 

See also

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