Answer:
A
/|
/ |
/ |
/ |
/ | h
/ |
/ |
/ |
/ a B
H
[sorry, can't draw in the application.]
1. Slope from H to B is 25
Slope from H to A is 77
therefore the angle AHB is 77-25 = 52 degrees
2. the angle HBA is 25+90 = 115 degrees [draw a line parallel to the ground through B. Alternating interior angle will be 25 plus the right angle going vertical.]
3. Therefore angle HAB (at the top) is 180 - 52 - 115 = 13 degrees
Using Law of Sines
sin(HAB) sin(AHB)
---------- = ------------
length a length h
or, sin(13) sin(52)
-------- = --------
50 h
solve for h = approx 175 feet
Explanation:
