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ladder should be leaned

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by sanju09 » Sat Sep 04, 2010 12:40 am
For safety, a rigid ladder should be leaned at an angle of about fifteen degrees to the vertical. Therefore, the distance from the foot of the ladder to the wall should be about k times of the height of the top of the ladder. Which of the following is an approximated value of k?
(A) ¼
(B) ½
(C) ¾
(D) 2
(E) 4

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by this_time_i_will » Sat Sep 04, 2010 1:25 am
This prob needs value of tan(75) or sin (15).
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by sanju09 » Sat Sep 04, 2010 1:34 am
this_time_i_will wrote:This prob needs value of tan(75) or sin (15).
approximations need no sophisticated Trigonometry on GMAT
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by this_time_i_will » Sat Sep 04, 2010 1:41 am
sanju09 wrote:
this_time_i_will wrote:This prob needs value of tan(75) or sin (15).
approximations need no sophisticated Trigonometry on GMAT
should be B.
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by sanju09 » Sat Sep 04, 2010 1:49 am
this_time_i_will wrote:
sanju09 wrote:
this_time_i_will wrote:This prob needs value of tan(75) or sin (15).
approximations need no sophisticated Trigonometry on GMAT
should be B.
approximations need reasons, though
The mind is everything. What you think you become. -Lord Buddha



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