Question 428550
Call the height of the tree  {{{ h }}}
You have a right triangle
The base is 90 ft
The height is {{{ h - 5 }}}
{{{ tan(70) = (h-5)/90 }}}
{{{ 2.747 = (h-5)/90 }}}
{{{ h - 5 = 90*2.747 }}}
{{{ h = 5 + 247.27 }}}
{{{ h = 252.3 }}}
The tree is 252 ft high