Final answer:
The equation 2 sin x - 1 = 0 contains two solutions between 0° and 360°.
Step-by-step explanation:
To find the number of solutions between 0° and 360° for the equation 2 sin x - 1 = 0, we need to look at the graph of the sine function. The equation 2 sin x - 1 = 0 can be rewritten as sin x = 1/2. In this range, sine has two solutions: 30° and 150°. Therefore, the equation contains two solutions.