Graph Software for Scientists & Engineers

ACOS(x)

Returns the arccosine, or inverse cosine, of the given number. The result will be in radians or degrees, depending on the Angles options. With "degrees" selected, acos(-1) returns 180.

y=acos(x)

See also:

ASIN
COSINE
Trigonometric and General Math Functions

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Vista, XP, NT,
ME, 2003, 2000,
Windows 98, 95
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