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The Figure Below shows the beams from a beacon with two

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Director
Director
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The Figure Below shows the beams from a beacon with two [#permalink] New post 30 Dec 2003, 21:00
The Figure Below shows the beams from a beacon with two search lights, one red and one green, which rotate at the same rate. If the red light rotates in a clockwise direction and the gree light rotates in a counterclockwise direction, what is the number of degrees through which each light must rotate before the red beam and green beam are aligned a second time?

a) 180* + w

b) 180* - w/2

c) 360* - w/2

d) (180* + w)/2

e) (360* + w)/2

*From Cambridge Test Prep
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CEO
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Re: Geometry Problem [#permalink] New post 30 Dec 2003, 21:15
Titleist wrote:
The Figure Below shows the beams from a beacon with two search lights, one red and one green, which rotate at the same rate. If the red light rotates in a clockwise direction and the gree light rotates in a counterclockwise direction, what is the number of degrees through which each light must rotate before the red beam and green beam are aligned a second time?

a) 180* + w

b) 180* - w/2

c) 360* - w/2

d) (180* + w)/2

e) (360* + w)/2

*From Cambridge Test Prep


first alignment : w/2

second alignment : 180

total : 180 +w/2

Answer : E
Director
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 [#permalink] New post 30 Dec 2003, 21:22
Agree with Praetorian.

Questions like these can be a doozy, even when they're relatively straightforward,
Director
Director
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Location: On Vacation at My Crawford, Texas Ranch
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 [#permalink] New post 30 Dec 2003, 21:24
Bunch of smart dudes we have on this board! :pilot
  [#permalink] 30 Dec 2003, 21:24
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