Question 29782
You have a triangle and are trying to find the Tangent where T = o/a

X is the opposite
150 is the adjacent
68 is the degrees

{{{ tan(68) = x/150 }}}
using the calculator we find that tan(68) = 2.4751 when rounded to 4 places.
{{{ 2.4751/1 = x/150 }}}
cross multiply
{{{ 2.4751(150) = 1x }}}
{{{ 371.265 = x }}}
and you are done.

Find out if your instructor wants the heigths rounded to the nearest whole number or to which decimal place.