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# numpy.arcsin () in Python

Parameters :

`  array:  [array_like] elements are in radians.  out:  [array_like] array of same shape as x. `

Return:

` An array with inverse sine of x for all x ie array elements. The values ​​are in the closed interval [-pi / 2, pi / 2]. `

Code # 1: Work

 ` # Python program explaining ` ` # arcsin () function `   ` import ` ` numpy as np ` ` `  ` in_array ` ` = ` ` [` ` 0 ` `, ` ` 1 ` `, ` ` 0.3 ` `, ` ` - ` ` 1 ` ` ] ` ` print ` ` (` ` "Input array: "` `, in_array) ` ` `  ` arcsin_Values ​​` ` = ` ` np.arcsin (in_array ) ` ` print ` ` (` ` "Inverse Sine values : "` `, arcsin_Values) `

Output:

` Input array: [0, 1, 0.3, -1] Inverse Sine values: [0. 1.57079633 0.30469265 -1.57079633] `

Code # 2: Graphic representation

 ` # Show Python program ` ` # Graphical representation ` ` # arcsin () function `   ` import ` ` numpy as np ` ` import ` ` matplotlib.pyplot as plt `   ` in_array ` ` = ` ` np.linspace (` ` - ` ` np.pi, np.pi, ` ` 12 ` `) ` ` out_array1 ` ` = ` ` np.sin (in_array) ` ` out_array2 ` ` = ` ` np.arcsin (in_array) `   ` print ` ` (` ` "in_array:" ` `, in_array) ` ` print ` ` (` ` "out_array with sin:" ` `, out_array1) ` ` print ` ` ( "out_arraywith arcsin:" , out_array1) ``   # red for numpy.arcsin () plt.plot (in_array, out_array1, color = ’blue’ , marker = " * " )    plt.plot (in_array, out_array2, color = ’ red’ , marker = "o" )   plt.title ( " blue: numpy.sin () red: numpy.arcsin () " ) plt.xlabel ( "X" ) plt.ylabel ( "Y" ) plt.show () `

Output:

` in_array: [-3.14159265 -2.57039399 -1.99919533 -1.42799666 -0.856798 -0.28559933 0.28559933 0.856798 1.42799666 1.99919533 2.57065399] 3.14 out_array with sin: [-1.22464680e-16 -5.40640817e-01 -9.09631995e-01 -9.89821442e-01 -7.55749574e-01 -2.81732557e-01 2.81732557e-01 7.55749574e-01 9.89821442e-01 9.09631995e 01 5.40640817e-01 1.22464680e-16] out_arraywith arcsin: [-1.22464680e-16 -5.40640817e-01 -9.09631995e-01 -9.89821442e-01 -7.55749574e-01 -2.81732557e-01 7.51732555e-01 -01 9.89821442e-01 9.09631995e-01 5.406 40817e-01 1.22464680e-16] RuntimeWarning: invalid value encountered in arcsin out_array2 = np.arcsin (in_array) `

arcsin.html # numpy.arcsin> https://docs.scipy.org/doc/numpy-dev/reference/generated/numpy.arcsin.html#numpy.arcsin
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