Posted by Roy on Saturday, September 8, 2012 at 11:52pm.
A ladder 5 meter long leans against the wall of an apartment house forming an angle of 50 degrees, 32 minutes with the ground. how high up the wall does it reach?

Trigonometry  Bosnian, Sunday, September 9, 2012 at 1:18am
sin theta = H / L = H / 5
H = 5 * sin theta = 5 * sin 50 ° 32 ´
H = 5 * 0.77199
H = 3.85995 m approx. H = 3.86 m