numpy.emath.arcsin#

emath.arcsin(x)[source]#

Compute the inverse sine of x.

Return the “principal value” (for a description of this, seenumpy.arcsin) of the inverse sine ofx. For realx such thatabs(x) <= 1, this is a real number in the closed interval\([-\pi/2, \pi/2]\). Otherwise, the complex principle value isreturned.

Parameters:

xarray_like or scalar

The value(s) whose arcsin is (are) required.

Returns:

outndarray or scalar

The inverse sine(s) of thex value(s). Ifx was a scalar, soisout, otherwise an array object is returned.

See also

numpy.arcsin

Notes

For an arcsin() that returnsNAN when realx is not in theinterval[-1,1], usenumpy.arcsin.

Examples

Try it in your browser!

>>>importnumpyasnp>>>np.set_printoptions(precision=4)

>>>np.emath.arcsin(0)0.0

>>>np.emath.arcsin([0,1])array([0.    , 1.5708])

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