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Trigonometric functions/Arccosine/Definition
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Arccosine
The
inverse function
of the real
cosine function
is
[
−
1
,
1
]
⟶
[
0
,
π
]
,
x
⟼
arccos
x
,
{\displaystyle [-1,1]\longrightarrow [0,\pi ],x\longmapsto \arccos x,}
and is called
arccosine
.
![{\displaystyle [-1,1]\longrightarrow [0,\pi ],x\longmapsto \arccos x,}](https://wikimedia.org/api/rest_v1/media/math/render/svg/2ecd68470a9279fb3e2ea542385322310d9b0f7f)
