Final answer:
The voltage after 38 degrees of rotation in a sine wave with a maximum voltage of 230 V is approximately 144.65 V.
Step-by-step explanation:
In a sine wave, the voltage at any given angle is related to the maximum voltage by the equation:
Voltage = Maximum Voltage × sin(Angle)
Given that the maximum voltage is 230 V, we can plug in the angle of 38 degrees to find the voltage:
Voltage = 230 V × sin(38 degrees)
Using a calculator, we find that the voltage after 38 degrees of rotation is approximately 144.65 V.