Answers

2016-07-20T17:12:24+08:00
Tan 48=h/20'+x;
h=20(tan48)+x(tan48)........1.;
tan 61=h/x;

h=x.tan61...........................2.

2=1;
x.tan61-x.tan48=20.tan48;

x=_________ans..then go back to equation 2;
h=_________ ans.....heigth of the building
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