rad2deg

Convert an angle from radians to degrees.

Usage

var rad2deg = require( '@stdlib/math/base/special/rad2deg' );

rad2deg( x )

Converts an angle from radians to degrees.

var PI = require( '@stdlib/constants/math/float64-pi' );

var d = rad2deg( PI/2.0 );
// returns 90.0

d = rad2deg( -PI/4.0 );
// returns -45.0

d = rad2deg( NaN );
// returns NaN

Notes

  • Due to finite precision, canonical values may not be returned. For example,

    var PI = require( '@stdlib/constants/math/float64-pi' );
    
    var d = rad2deg( PI/6.0 );
    // returns 29.999999999999996
    

Examples

var randu = require( '@stdlib/random/base/randu' );
var PI = require( '@stdlib/constants/math/float64-pi' );
var rad2deg = require( '@stdlib/math/base/special/rad2deg' );

var r;
var d;
var i;

for ( i = 0; i < 100; i++ ) {
    r = randu() * 2.0 * PI;
    d = rad2deg( r );
    console.log( 'radians: %d => degrees: %d', r, d );
}