Math module contains a number of functions which is used for mathematical operations. The math.atan() function returns the arctangent of a number as a value. The value passed in this function should be between -PI/2 and PI/2 radians.
Syntax: math.atan(x)
Parameter:This method accepts only single parameters.
- x :This parameter is the value to be passed to atan()
Returns:This function returns the arctangent of a number as a value.
Below examples illustrate the use of above function:
Example 1:
# Python code to implement # the atan()function # importing "math" # for mathematical operations import math a = math.pi / 6 # returning the value of arctangent of pi / 6 print ( "The value of tangent of pi / 6 is : " , end = "") print (math.atan(a)) |
Output:
The value of tangent of pi / 6 is : 0.48234790710102493
Example 2:
# Python code to implement # the atan()function import math import numpy as np import matplotlib.pyplot as plt in_array = np.linspace( 0 , np.pi, 10 ) out_array = [] for i in range ( len (in_array)): out_array.append(math.atan(in_array[i])) i + = 1 print ( "Input_Array : \n" , in_array) print ( "\nOutput_Array : \n" , out_array) plt.plot(in_array, out_array, "go:" ) plt.title( "math.atan()" ) plt.xlabel( "X" ) plt.ylabel( "Y" ) plt.show() |
Output:
Input_Array : [0. 0.34906585 0.6981317 1.04719755 1.3962634 1.74532925 2.0943951 2.44346095 2.7925268 3.14159265] Output_Array : [0.0, 0.3358423725664079, 0.6094709714274295, 0.808448792630022, 0.9492822422213403, 1.0504981725497873, 1.1253388328842984, 1.1823365638628716, 1.2269249964859286, 1.2626272556789118]
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