A LADDER IS PLACED AGAINST A WALL. TO BE SAFE, IT MUST BE INCLINED AT 70 DEGREES AND 80 DEGREES TO THE GROUND IT IS 1.5 METRES FROM THE WALL AND 5.8 METRES HIGH. IS IT SAFE AND WHY?
I think you must mean between 70° and 80° to the ground......if so, we have
tan-1(5.8 / 1.5) = about 75.5°
So...it is safe....
