The math.atan() method is used to calculate the arc tangent of a given number.
Syntax
import math
math.atan(num)
Parameter
num(required): It is a number.
Return Value
It returns the arc tangent of the number as a float, with values ranging from from -PI/2 to PI/2.
If the num is not a number, it raises TypeError.
Visual Representation
Example 1: How to Use math.atan() Method
import math
print (math.atan(1))
print (math.atan(10))
print (math.atan(-10))
print (math.atan(22.9))
Output
0.7853981633974483
1.4711276743037345
-1.4711276743037345
1.5271559297948705
Example 2: Plotting
import matplotlib.pyplot as plt
import math
# Create a list of x values from -2 to 2
x = [i * 0.01 for i in range(-200, 201)]
# Calculate the corresponding y values
y = [math.atan(i) for i in x]
# Create a new figure
plt.figure()
# Plot x against y
plt.plot(x, y)
# Set the title
plt.title('Plot of atan(x)')
# Set the x and y axis labels
plt.xlabel('x')
plt.ylabel('atan(x)')
# Display the plot
plt.show()
Output
That’s it.
Ankit Lathiya is a Master of Computer Application by education and Android and Laravel Developer by profession and one of the authors of this blog. He is also expert in JavaScript and Python development.