Math homework helppppp

16. A hot-air balloon has risen to an altitude of 280 m. You can still see the starting point at an 18° angle of depression. To the nearest meter, how far is the balloon from the starting point?

tan(18) = 280 / x
x * tan(18) = 280
x = 280 / tan(18)
x =~ 862

Use trigonometry:

tan = leg opp/leg adj

tan 18 = 280/leg adj

leg adj = 280/tan 18

leg adj = 280/.3249

leg adj = 861.8 m