Question 1157372
{{{drawing(400,1200/11,-1,10,-1,2,

line(0,0,8.8cos(11*pi/180),8.8sin(11*pi/180)),
green(line(0,0,8.8cos(11*pi/180)),line(8.8cos(11*pi/180),0,8.8cos(11*pi/180),8.8sin(11*pi/180))),locate(8.8,1,880ft),locate(4,1.3,x),
locate(2.6,.7,11^o), red(arc(0,0,7,-5.4,0,14))


)}}}

{{{sin(11^o) = opposite/hypotenuse=800/x}}}

{{{sin(11^o)/1^"" =800^""/x^""}}}<pre>
cross-multiply:

{{{x*sin(11^o)=800}}}

{{{x=800/sin(11^o)}}}

{{{x=4192.674451}}}

Round off to 4192.7 ft.

Edwin</pre>