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What is the angle in degrees between hour hand & minute

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vivek123
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What is the angle in degrees between hour hand & minute [#permalink] New post   20 Feb 2006, 21:04
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What is the angle in degrees between hour hand & minute hand of a clock, when clock reads 3:15 (15 minutes past 3)?

A) 0
B) 4.5
C) 15.0
D) 7.5
E) 1.0



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Re: What is the angle in degrees between hour hand & minute [#permalink] New post   20 Feb 2006, 22:15
0 right?

at 3:15.. the hour hand and the minute hand overlap each other..
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Natalya Khimich
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Re: What is the angle in degrees between hour hand & minute [#permalink] New post   20 Feb 2006, 22:31
it's 7.5
We need to take into account that the hour hand is moving when the minute hand on 15 min, and it was moving for quarter of an hour. One hour for hour hand is 360/12=30. So the difference is 30/4=7.5
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Re: What is the angle in degrees between hour hand & minute [#permalink] New post   20 Feb 2006, 22:40
Natalya Khimich wrote:
it's 7.5
We need to take into account that the hour hand is moving when the minute hand on 15 min, and it was moving for quarter of an hour. One hour for hour hand is 360/12=30. So the difference is 30/4=7.5


good one.. thanks.. didnt even think about it..\\just visualized it
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Re: What is the angle in degrees between hour hand & minute [#permalink] New post   20 Feb 2006, 22:44
Natalya Khimich wrote:
it's 7.5
We need to take into account that the hour hand is moving when the minute hand on 15 min, and it was moving for quarter of an hour. One hour for hour hand is 360/12=30. So the difference is 30/4=7.5


That's cool :good
OA is D & OE is Natalya :)



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Re: What is the angle in degrees between hour hand & minute [#permalink]
20 Feb 2006, 22:44
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