Question 191207
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The problem forms a Right Triangle isn't it?


{{{drawing(400,400,-2,14,-2,6,line(0,0,0,4),line(0,4,-.2,4),line(0,4,.2,4),line(12,0,0,0),green(line(12,0,0,4)),red(locate(8.7,.7,10.4^o)),locate(.1,3.5,vertical),locate(.1,3.2,rise),red(locate(.1,2.9,195ft)),red(locate(0.1,2.6,9.5in)),green(locate(6,2.8,escalator)))}}}


*Take note:
195ft and {{{(9.5cross(in))(1ft/12cross(in))=0.7917ft}}}

 
By Trigo Function:
{{{sin(sigma)=opp/hyp=vertical/escalator}}}
{{{sin(10.4^o)=195.7917ft/escalator}}}
{{{escalator=195.7917/sin(10.4^o)=red(1084.6ft)}}}


Or, <font color=blue>1,084ft </font> and {{{(0.60cross(ft))(12in/1cross(ft))}}}=<font color=blue>7.2 inches</font>


Thank you,
Jojo</font>