A 15m ladder is placed against a building so that its 2m from the base of the building.... What angle does the ladder make with the ground t

cos(w) = 2/15

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{cos}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{2}}}{{\mathtt{15}}}}\right)} = {\mathtt{82.337\: \!744\: \!339\: \!234^{\circ}}}$$

The angle is 82.34°

Gruß radix !