Respuesta :

xenia168

Answer:

Step-by-step explanation:

a = BC - DC

[tex]\frac{60}{BC}[/tex] = tan 28°

BC = [tex]\frac{60}{tan28}[/tex] ≈ 112.8 m

DC = [tex]\frac{60}{tan54}[/tex] ≈ 43.6 m

a ≈ 112.8 - 43.6 = 69.2 m