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° (see Fig. 9.11)

In this figure; AC is the rope which is 20 m long and we have to find AB.

In Δ ABC;





Hence, AB = 10cm


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