Compute the inverse cosine of x, where the output is in radians


julia> acos(0.5)

Computes the inverse cosine of 0.5.

julia> acos(1)

Computes the inverse cosine of 1.

julia> acos(-1)

Computes the inverse cosine of -1.

julia> acos(2)
DomainError with acos: input -2.0 is out of the range [-1, 1]

Raises a DomainError for input 2 since it is out of the valid range [-1, 1].

julia> acos("hello")
MethodError: no method matching acos(::String)

Raises a MethodError since the input is of type String, and acos is not defined for strings. Ensure the input is of type Number when using acos.

See Also

acos, acosd, acosh, acot, acotd, acoth, acsc, acscd, acsch, asec, asecd, asech, asin, asind, asinh, atan, atan2, atand, atanh, cos, cosc, cosd, cosh, cospi, cot, cotd, coth, csc, cscd, csch, deg2rad, rad2deg, sin, sinc, sind, sinh, sinpi, tan, tand, tanh,

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