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a ramp at the loading dock of an automobile manufacturing plant makes an angle of 13 degrees with the ground. the bottom end of the ramp is 25 meters from the building what is the length of the ramp to the nearest tenth

 Mar 9, 2015

Best Answer 

 #1
avatar+130516 
+5

We know an angle and an adjacent side, and we're trying toi find the hypotenuse (the ramp length)  ....the cosine seems the natural choice, here.....so we have

cos13° = 25/ h     rearrange

h = 25 / cos 13°  = about 25.7 ft

 

  

 Mar 9, 2015
 #1
avatar+130516 
+5
Best Answer

We know an angle and an adjacent side, and we're trying toi find the hypotenuse (the ramp length)  ....the cosine seems the natural choice, here.....so we have

cos13° = 25/ h     rearrange

h = 25 / cos 13°  = about 25.7 ft

 

  

CPhill Mar 9, 2015

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