step 1=find out how hi on wall at start . . . . hite=leng*sine(70 deg)=5*0.93969262=4.698463104 meters . . . nu hite...subtrakt 2...hite=2.698463105 . . . (base av ladder gotta slide awae from wall) . . . nu angel...sine(angel)=2.698463105/5 =0.53969262 . . . nu angel=invers sine(0.53969262)=32.66271666 deg or bout 33 deg