Answer:
1.3
Step-by-step explanation:
Since this triangle is right we have to have a 90° Angle as well.
Our equation would look like this:
[tex]20 + 90 + 39 = 180x[/tex]
Add.
[tex]149 = 180x[/tex]
Divide.
[tex]180[/tex] ÷ [tex]139 =[/tex] [tex]1.29496402878[/tex]
Round. [tex]= 1.3[/tex]
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