Respuesta :

schoolkid101
the answer that i think it is 80
cos Ф= adjacent side /hypotenuse

Data:
adjacent side=7√3
Ф=30º

So:

cos 30º=7√3 / x
x=(7√3) /(cos 30º)
x=(7√3) / (√3/2)
x=14

Answer: x=14