[填空题]
While fishing, you get bored and start to5 to7,td6cn+qw c opp4yfrf; 9 swing a 8a 7hz2ykujk +sinker weight around in a circle below you on a 0.25-m piece of fishing line. The weight makes a complete circle every 0.50 s. What is the angle that the fishing line makes with the vertical? [Hint: See Fig. 5–10akk 2 +j7hz8uy.] $^{\circ}$
