Final answer:
The question is about finding the angle between 0 and π/2 based on given information in Figure 30.52.
Step-by-step explanation:
The question pertains to finding the angle between 0 and π/2 based on the given information in Figure 30.52. The figure shows two vectors, L and Lz, which form a right triangle.
The ratio of Lz to L is equal to the cosine of the angle of interest. By using trigonometry, we can find the values of L and Lz, which can then be used to determine the angle.