Say you have a building on each side of a level alley. You place a 10 foot ladder at the base of one building and lean it against the other building. Then you place a 14 foot ladder at the base of the other building and lean it across to the opposite building. The ladders cross each other at a vertical distance of 5 feet from the surface of the alley. Calculate the width of the alley.
The angles depend on the ratio of the ladders. If you change the lengths, you change the ratios. Then the angle calculation changes too. Then it would be 21.5cosx1 = 14cosx2. You get a different set of angles.
May 14th, 2015
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