+0  
 
+1
40
3
avatar+4404 

Help

NotSoSmart  Nov 23, 2018
 #1
avatar+14556 
+3

Cosine = adj/hyp

ElectricPavlov  Nov 23, 2018
 #2
avatar+20 
+2

Thus, (C) fits the option!

neworleans06  Nov 23, 2018
 #3
avatar+92641 
+2

We know an angle and the adjacent side to this angle

And we are looking for the hypotenuse [ the side opposite the right angle ]

 

The cosine  = the ratio of the adjacent side to the hypotenuse....so

 

cos (20°) =   54 / x  ⇒ "C"

 

 

cool cool cool

CPhill  Nov 23, 2018

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