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Anna has a 10-foot long ladder that she is going to rest against a vertical wall along the bottom of a window-sill that is 8.5 feet above the ground. The safety code recommends that the angle the ladder makes with the ground be no greater than 65°. Will the ladder be safe resting on the window sill?

 Mar 2, 2018

Best Answer 

 #1
avatar+18138 
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The ladder is the hypotenuse of a right triangle.  10ft

 

The leg opposite the angle in question is 8.5 ft

 

arcsin (8.5/10) = 58.2 degrees     It is OK!

 Mar 2, 2018
edited by Guest  Mar 2, 2018
 #1
avatar+18138 
+2
Best Answer

The ladder is the hypotenuse of a right triangle.  10ft

 

The leg opposite the angle in question is 8.5 ft

 

arcsin (8.5/10) = 58.2 degrees     It is OK!

ElectricPavlov Mar 2, 2018
edited by Guest  Mar 2, 2018

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