acos

p5_sys::global

Static acos 

Source 
pub static acos: AcosInternalType
Expand 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) if the angleMode is RADIANS or 0 to 180 if the angle mode is DEGREES.

Examples

let a = PI;
let c = cos(a);
let ac = acos(c);
// Prints: "3.1415927 : -1.0 : 3.1415927"
print(a + ' : ' + c + ' : ' + ac);
let a = PI + PI / 4.0;
let c = cos(a);
let ac = acos(c);
// Prints: "3.926991 : -0.70710665 : 2.3561943"
print(a + ' : ' + c + ' : ' + ac);

Parameters

value the value whose arc cosine is to be returned