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A ladder 7m long stands on level ground and makes a 73 degree angle with the ground as it rests against a wall. How far from the wall is the base of the ladder?
Guest Feb 15, 2012
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Tae Won:

A ladder 7m long stands on level ground and makes a 73 degree angle with the ground as it rests against a wall. How far from the wall is the base of the ladder?



w = distance to wall
l = 7m
alpha = 73deg
cos( alpha ) = w/l
w = cos( alpha ) * l
[input]cos( 73 ) * 7m[/input]
Tae Won:

How far from the wall is the base of the ladder?


about 2.04m
admin  Feb 15, 2012

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