Sagot :
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We will start with the easiest one. At 9 o clock, the hour hand is at 9 and the minute hand is at 12. The angle between the two hands is 90 degrees.
Step-by-step explanation:
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Answer:
Hence a right angle is formed.
•The 15 degrees comes from the fact that the 9 o clock hand is not exactly on 9 anymore but between 9 and 10. from 9 to 12 = 90 degrees, so from 9 to 10 is 90/3=30 degrees, so from 9 to 9:30 = 30/2 = 15 degrees.