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Name

acos()

Description

The inverse of cos(), returns the arc cosine of a value. This function expects the values in the range of -1 to 1 and values are returned in the range 0 to PI (3.1415927).

Examples

  • float a = PI;
float c = cos(a);
float ac = acos(c);
// Prints "3.1415927 : -1.0 : 3.1415927"
println(a + " : " + c + " : " +  ac);

  • float a = PI + PI/4.0;
float c = cos(a);
float ac = acos(c);
// Prints "3.926991 : -0.70710665 : 2.3561943"
println(a + " : " + c + " : " +  ac);

Syntax

  • acos(value)

Parameters

  • value(float)the value whose arc cosine is to be returned

Return

  • float

Related

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