#acos

return the arccosine of the parameter

#Declaration

• genType acos(genType x)

#Parameters

• x : Specify the value whose arccosine to return.

#Description

atan returns the angle whose trigonometric cosine is x. The range of values returned by acos is [0,π]. The result is undefined if |x|>1.

#See Also

• sin
• cos
• tan
• asin
• atan