base=250 & angel 1=30 deg & angel 2=65 deg
yuze law av sines: sine(angel1)/(far side) =sine(angelx)/(far side)
angel3=180-(30+65)=85 deg=angel at top av triangel
far side from top=base...sine(85 deg)=0.996194698
konst=0.9986194898/250=0.003984778792
sine(30 deg)=0.5 & 0.5/(short side)=konst
so, short side=0.5/konst=0.5/0.003984778792 or about 125.5 (round1)
sine(65 deg)=0.906307787, so other side=0.9063077/0.00398477879
=227.4
hite=1 side*kosine(other angel)
if yuze shortest side (kros from 30 deg), then hite=125.5*kosine(65 deg)
kosine(65)=0.422517251
hite=this*125.5=53.038592