Convert angles from degrees to radians for all elements in a given NumPy array
Angles can be expressed in both degrees and radians. In this article, we will know about the approaches and methods to convert degrees to radians.
Method #1 : Using radians()
This method takes an array as an input parameter and returns an array that has radian values.
Python
# python code demonstrating usage of radians# method to convert degrees to radians# importing numpy libraryimport numpy as npimport math # initialising an arrayarray=np.arange(20.)*90 # printing degree valuesprint('Values of array in Degrees:',array) # converting to radiansradian_array=np.radians(array) # printing radian valuesprint('Values of array in radians:',radian_array) |
Output:
Method #2: Using deg2rad()
This method takes input array and returns an array that has radian values the same as the size of the input array.
Python3
# python code demonstrating usage of radians# method to convert degrees to radians# importing numpy libraryimport numpy as npimport math # initialising an arrayarray=np.arange(20.)*90 # printing degree valuesprint('Values of array in Degrees:',array) # converting to radiansradian_array=np.deg2rad(array) # printing radian valuesprint('Values of array in radians:',radian_array) |
Output:
Method 3: Using Formula
Python3
# python code demonstrating usage of radians# method to convert degrees to radians# importing numpy libraryimport numpy as npimport math # initialising an arrayarray=np.arange(20.)*90 # printing degree valuesprint('Values of array in Degrees:',array)radian_array=[] # converting to radiansfor i in array: radian_array.append(i*math.pi/180) # printing radian valuesprint('Values of array in radians:',radian_array) |
Output:
