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Topic: Easy: Analog Clock I (Read 5432 times) |
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Mixster
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Well, since the minute and hour hand don't overlap at this point you need to determine the degrees involved. 360 degrees in a circle, divided by 12, 30 degrees per hour. Hour hand is one quarter the way from 3 to 4, so 7.5 degrees. Anybody get anything else?
-Mixster
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Coren
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Re: Easy: Analog Clock I
« Reply #1 on: Aug 6th, 2002, 10:03pm » |
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That was my solution
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SlayerWitch
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Re: Easy: Analog Clock I
« Reply #2 on: Aug 28th, 2004, 9:49pm » |
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That was also my solution, though I arrived at it in a slightly different way. I started out by working out when it is that the hour hand arrives on any single minute mark, which is at :00, :12, :24, :36, and :48 of each hour. Then i worked out that at 3:15 the hour hand would be at :15, which meant it would be 1 and a quarter minutes beyond the 3 hrs mark on the clock. Then I worked out that 360 degrees on the inside of any shape = 60 minute marks, therefore 360 degrees/60 = 60min/60 (to give degrees per minute mark), which works out to be 6 degrees. Multiply 6 degrees by the 1 and a quarter marks that it is beyond the minute hand, and you get 7.5 degrees.
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gramps
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I am a nobody. Nobody is perfect. Therefore, ...
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Re: Easy: Analog Clock I
« Reply #3 on: Aug 29th, 2004, 5:30am » |
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Hi folk,
I'm lost. I thought the first post of a thread would state the puzzle, and subsequent posts will discuss it. But I don't find the puzzle. Is it another puzzle to puzzle out what the puzzle is? 
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gramps
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I am a nobody. Nobody is perfect. Therefore, ...
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Re: Easy: Analog Clock I
« Reply #6 on: Aug 29th, 2004, 9:23am » |
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Thank you both, Sir Col and Towr.
I had a look at Wu's Collection -- are all the items here in the forum as threads? If one wants to post a reply to one of the items in the Collection, does he/she open a thread here, or if there is one here, look for it all over the forum? I notice some are cross-referenced to a forum thread, but many aren't.
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towr
wu::riddles Moderator
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Some people are average, some are just mean.
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Re: Easy: Analog Clock I
« Reply #7 on: Aug 29th, 2004, 9:42am » |
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Most of the puzzles on the site have a thread in the forum, but some are years old, and many are hard to find if you try to use the forums search function.
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Wikipedia, Google, Mathworld, Integer sequence DB
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