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import cmath

import math

def apparent_power(

voltage: float, current: float, voltage_angle: float, current_angle: float

) -> complex:

"""

Calculate the apparent power in a single-phase AC circuit.

Reference: https://en.wikipedia.org/wiki/AC_power#Apparent_power

>>> apparent_power(100, 5, 0, 0)

(500+0j)

>>> apparent_power(100, 5, 90, 0)

(3.061616997868383e-14+500j)

>>> apparent_power(100, 5, -45, -60)

(-129.40952255126027-482.9629131445341j)

>>> apparent_power(200, 10, -30, -90)

(-999.9999999999998-1732.0508075688776j)

"""

# Convert angles from degrees to radians

voltage_angle_rad = math.radians(voltage_angle)

current_angle_rad = math.radians(current_angle)

# Convert voltage and current to rectangular form

voltage_rect = cmath.rect(voltage, voltage_angle_rad)

current_rect = cmath.rect(current, current_angle_rad)

# Calculate apparent power

return voltage_rect * current_rect

if __name__ == "__main__":

import doctest

doctest.testmod()

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