Python – math.atan() function
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()functionimport 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]
