- A135°
- B217.5°
- C142.5°
- D150°
Step-by-Step Solution
It is 10:15. Hour hand: °. Minute hand: °. The difference is 217.5°, so the smaller angle is 360 − 217.5 = 142.5°. (150° ignores the hour hand's quarter-hour drift.)
Answer: C) 142.5°
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