Python Math module contains various functions to perform mathematical operations. One such function is the Math.asin() which stands for Arc Sine. The Math.asin() function is used to calculate the arcsine (inverse of the sine function) of the given value and returns the arcsine in radians.

Definition

The Math.asin() function is used to calculate the arcsine (inverse of the sine function) of the given value and return the arcsine in radians. It takes one parameter, which is the sine of an angle, and returns the arcsine in radians. The Range of Math.asin() function is from -PI/2 to PI/2.

Usecase

The Math.asin() function is very helpful while finding out angles’ arcsine in any Python application. It helps to calculate the height or elevation of an object located at a distance with the help of sine waves. It is also helpful in generating and calculating audio signals.

Examples with Output

Example 1: Finding arcsine of a given value

# importing the math library
import math

# Value of sine (In this case 0.5)
s = 0.5

# returning arcsine of given value
print(math.asin(s))

Output:
0.5235987755982989

Example 2: Finding an angle by using arcsine

# importing the math library
import math

# Value of arcsine (In this case 0.9)
a = 0.9

# returning sine of arcsine
print(math.sin(a))

Output:
0.781831

Conclusion

The Math.asin() function is a useful function for finding the arcsine of given values and finding angles by its arcsine. We saw examples of basic use cases of this function and its output. The range of this function is from -PI/2 to PI/2. It is used in solving many problems in the fields of mathematics, physics, audio processing, and many more.