A ladder is 13 m long. It is put against a wall so that it reaches a point on the wall
12.1 metres above the ground
th
Ladder
Wall
13 m
Trigonometry
(1) What angle does the ladder make
with the ground?
(ii) If the ladder were to reach a point
12.6 m high, what angle would the
ladder make with the ground?
(iii) The correct angle for a ladder is 75°
How high will the ladder reach up
the wall at this angle?