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the angle of elevation from the top of a 16m building to the top of a second building is 48 degrees, 

The buildings are 30m apart. What is the height of the taller building?

 Dec 21, 2017

Best Answer 

 #1
avatar+8394 
+1

 

First let's just look at the right triangle on top. The side adjacent to the  48°  angle is 30 m. And we can find the length of the side opposite using tangent.

 

tan 48°   =   opposite / 30        Multiply both sides by  30 .

opposite   =   30 tan 48°

 

And....

 

height of taller tower   =   16 + 30 tan 48°   ≈   49.318  m

 Dec 21, 2017
 #1
avatar+8394 
+1
Best Answer

 

First let's just look at the right triangle on top. The side adjacent to the  48°  angle is 30 m. And we can find the length of the side opposite using tangent.

 

tan 48°   =   opposite / 30        Multiply both sides by  30 .

opposite   =   30 tan 48°

 

And....

 

height of taller tower   =   16 + 30 tan 48°   ≈   49.318  m

hectictar Dec 21, 2017

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