rad2deg

Converts angles from radians to degrees.

Category: Mathematics > Elementary Math

Syntax

D = rad2deg(R)

Multiplies each element of R by 180/pi.

Description

A full turn is 2*pi radians or 360 degrees, so one radian is about 57.2958 degrees. The conversion is a plain multiplication, which means rounding errors can appear: the result for pi/6 is very near 30 but may differ from it in the last bits.

The opposite conversion is deg2rad. For trigonometry directly in degrees, sind, cosd and tand are more accurate than converting first.

Input arguments

R
Angles in radians, as a real floating-point array.

Output arguments

D
Angles in degrees, same size as R.

Example

Common angles

rad2deg([0 pi/2 pi 2*pi])
round(rad2deg(pi/6))
Output
ans = 1×4

     0    90   180   360
ans = 30

Notes

Integer-class input such as int8 is not accepted.

See also

deg2rad sind cosd pi angle