\(sin(x)=\frac{opposite }{hypotenuse }<=> sin(65)= \frac{15 ft}{d} <=> d= \frac{15}{0,906}\)
d~16,556 ft
Hope this helps!
Sin of right triangle = opposite / hypotenuse
You need to find the hypotenuse of this triangle
sin 65 = 15/hyp
re-arrange
hyp = 15 /sin 65 = ~16.6 ft