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27.10.2020 •
Mathematics
At 2:48 what is the degree measure of the smaller angle formed by the hour and minute hands of a 12-hour clock? - Please help, I have 10 minutes.
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Ответ:
204 degrees
For the hour hand :
Each hour (12 of them) covers 30 degrees (360/12 = 30 degrees)
at 2:00 you have covered 60 degrees
Each minute the hour hand moves 1/2 degree (30 degrees / hour x 1 hour/60 min = 1/2 degree) so at 2 48 the hour hand is at 2*30 + 48 * 1/2 =84 degrees
For the minute hand:
Each minute is 6 degrees (360 degrees x 1 hr/ 60 min = 6 degrees / min) so at 48 minutes the minute hand is at 48 x 6 = 288 degrees
288 - 84 = 204 degrees
Ответ:
the answer is D.31 because 21+10=31
hope i helped