Crane tower, jib and cable

Crane tower, jib and cable

Secondary 2
TGM Original Questions

A crane is represented by vertical tower \(AC\), jib \(BC=16\) m, and cables \(AB\) and vertical \(BH\). Given \(\angle ACB=55^\circ\) and \(\angle CAB=105^\circ\), find

  1. \(\angle ABH\),
  2. cable length \(AB\). Give non-exact lengths, areas and other numerical values to 3 significant figures, and angles to 1 decimal place, unless otherwise stated.

Solution:

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Answer:(a) \(75^\circ\); (b) \(13.6\) m.

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