Mathematics

Problem

A ladder rests against a vertical wall, making an angle of

70^{\circ}

with the horizontal ground. The foot of the ladder is

4\,\text{m}

from the wall. Calculate the length of the ladder, correct to one decimal place. a)

10.9\,\text{m}

11.7\,\text{m}

4.3\,\text{m}

8.0\,\text{m}