NumPy Tutorial · NumPy ufunc

ufunc Trigonometric

Learn all about ufunc Trigonometric in this comprehensive tutorial.

5 min read advanced

•NumPy provides the ufuncs sin(), cos() and tan() that take values in radians and produce the corresponding sin, cos and tan values.
•By default all of the trigonometric functions take radians as parameters but we can convert radians to degrees and vice versa as well in NumPy.
•Finding angles from values of sine, cos, tan.
•Finding hypotenues using pythagoras theorem in NumPy.

Trigonometric Functions

NumPy provides the ufuncs sin(), cos() and tan() that take values in radians and produce the corresponding sin, cos and tan values.

python

import numpy as npx = np.sin(np.pi/2)
print(val_1)

python

import numpy as np
arr = np.array([np.pi/2, np.pi/3, np.pi/4, np.pi/5])val_1 = np.sin(arr)
print(val_1)

By default all of the trigonometric functions take radians as parameters but we can convert radians to degrees and vice versa as well in NumPy.

Note: Note: radians values are pi/180 * degree_values.

python

import numpy as nparr = np.array([90, 180, 270, 360])
  val_1 = np.deg2rad(arr)
print(val_1)

python

import numpy as nparr = np.array([np.pi/2, np.pi, 1.5*np.pi, 2*np.pi])
val_1 = np.rad2deg(arr)
print(val_1)

Finding angles from values of sine, cos, tan. E.g. sin, cos and tan inverse (arcsin, arccos, arctan).

NumPy provides ufuncs arcsin(), arccos() and arctan() that produce radian values for corresponding sin, cos and tan values given.

python

import numpy as npx = np.arcsin(1.0)
print(val_1)

python

import numpy as nparr = np.array([1, -1, 0.1])val_1 = 
  np.arcsin(arr)
print(val_1)

Finding hypotenues using pythagoras theorem in NumPy.

NumPy provides the hypot() function that takes the base and perpendicular values and produces hypotenues based on pythagoras theorem.

python

import numpy as npbase = 3perp = 4x = np.hypot(base, perp)
print(val_1)

2 questions

Which of the following is true about ufunc Trigonometric?

It is strictly typedIt is evaluated at runtimeIt requires explicit memory managementIt is deprecated

What is the most common pitfall when working with ufunc Trigonometric?

SyntaxErrorIndentationErrorNameErrorTypeError

Answer all questions to submit.