Is the statement true or false that the sine wave is positive from 180° to 360° and negative from 0° to 180°?

The statement is false because a sine wave is positive between 0° and 180° and negative between 180° and 360°.

In a sine wave, the values are derived from the sine function, which starts at zero degrees with a value of 0, increases to its maximum value of 1 at 90 degrees, and then decreases back to 0 at 180 degrees. From this point, the sine wave continues into the negative values, reaching its minimum value of -1 at 270 degrees and returning to 0 at 360 degrees. Therefore, the defined regions of positivity and negativity for a standard sine wave are critical to understanding its behavior in electrical and wave applications.

The other options hint at specific conditions or alterations to the sine wave, but they do not pertain to its fundamental characteristics as defined in its basic representation over a cycle from 0° to 360°.