+0  
 
0
249
1
avatar+164 

Thank you!

Gwendolynkristine  Jun 5, 2017
 #1
avatar+7096 
+2

cos θ = adjacent / hypotenuse

 

cos θ = road / stream

 

cos θ = 20 / 27                 Take the inverse cosine of both sides.

 

θ = arccos (20 / 27)          Putting this into a calculator gives us....

 

θ ≈ 42º

hectictar  Jun 5, 2017

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