Question

# A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole if the angle made by the rope with the ground level is 30∘  [1 MARK]

Solution

## Let AB be the vertical pole and CA be the 20 m long rope such that its one end is tied from the top of the vertical pole AB and the other end C is tied to a point C on the ground. In ΔABC, we have sin 30∘=h20                                                           [12 MARK] ⇒12=h20 ⇒h=10 m                                                            [12 MARK] Hence, the height of the pole is 10 m.

Suggest corrections