Answer:
(D)56.4
Step-by-step explanation:
According to the question, Let AB=10, AC=12 and m∠B=90°.
Thus, from ΔABC, using trigonometry, we have
[tex]\frac{AB}{AC}=sinx[/tex]
[tex]\frac{10}{12}=sinx[/tex]
[tex]\frac{5}{6}=sinx[/tex]
[tex]sinx=0.83[/tex]
[tex]x=sin^{-1}(0.83)[/tex]
[tex]x=56.4[/tex]
Therefore, at [tex]x=56.4[/tex] the wire meet the ground.
