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A ladder leans against a building. The foot of the ladder is 6 feet from the building. The ladder reaches a height of 14 feet on the building. a. Find the length of the ladder to the nearest foot. Use either SOHCAHTOA or CHOSHACAO.

 Oct 25, 2016
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The ladder is the hypotenuse of a right triangle.   Opposite side is 14ft    Adjacent side is 6 ft

angle = arctan 14/6 = 66.8 degrees

sin 66.8 = opposite/hypotenuse = 14/hypotenuse  

hypotenuse = opposite/sin66.8 = 15.23 ft ladder length

 

An easier way would be to use the Pythagorean Theorem    14^2 + 6^2 = ladder^2

196 +36 = ladder^2

232= ladder^2       Ladder= sqrt(232) = 15.23 ft

 Oct 25, 2016

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