If yu assume the string is strate & ignore fakt sumwon hold end av string
bout 4 ft abuv ground...
Yu hav rite triangel with hite=20 & long side=80
so sine(angel)=20/80=0.25
take invers sine & yu get 14.4775 deg
more akkurut tu sae hite=20-4=16
then get invers sine av (16/80)...11.537 deg