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Python – math.asin() function
  • Last Updated : 28 May, 2020

Math module contains a number of functions which is used for mathematical operations. The math.asin() function returns the arc sine value of a number. The value passed in this function should be between -1 to 1.

Syntax: math.asin(x)

Parameter:This method accepts only single parameters.

  • x :This parameter is the value to be passed to asin()

Returns:This function returns the arc sine value of a number.

Below examples illustrate the use of above function:



Example 1:




# Python code to implement
# the acos()function
        
# importing "math"
# for mathematical operations  
import math  
       
a = math.pi / 6
        
# returning the value of arc sine of pi / 6  
print ("The value of arc sine of pi / 6 is : ", end ="")  
print (math.asin(a))

Output:

The value of arc sine of pi / 6 is : 0.5510695830994463

Example 2:




# Python code to implement
# the aasin()function
import math 
import matplotlib.pyplot as plt  
    
in_array = [-0.14159265, -0.57039399, -0.28559933
            0.28559933, 0.570393990.94159265
    
out_array = [] 
    
for i in range(len(in_array)): 
    out_array.append(math.asin(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.asin()")  
plt.xlabel("X")  
plt.ylabel("Y")  
plt.show()  

Output:

Input_Array : 
 [-0.14159265, -0.57039399, -0.28559933, 0.28559933, 0.57039399, 0.94159265]

Output_Array : 
 [-0.14207008957392517, -0.6069854488522558, -0.2896317474780172, 0.2896317474780172, 0.6069854488522558, 1.227328875116741]

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