in geometry
http://prntscr.com/l27uh4
h= height of flag pole
Tan 30 = opp/adj = h/75
.57735 = h/75
h = 43.3 ft ~~ 43 ft
how did u get
.57735
tan (30“) = 1/sqrt(3) ≈ .57735
The exact height is 75 / sqrt(3) ft
+37146 +37146 
