2 answers:
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
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