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Multi-Step Trigonometry Problem in Connected Triangles

Multi-Step Trigonometry Problem in Connected Triangles

Secondary 2

In the diagram, \(\angle ACB=40{}^\circ \), \(\angle CAB=\angle DCB=90{}^\circ \), \(BC=3\)m and \(CD=1.2\)m.

Calculate

  1. \(AC\),
  2. \(BD\),
  3. \(\angle BDC\).

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Answer:(a) \(2.30\text{ m}\) (b) \(3.23\text{ m}\) (c) \(68.2^\circ\)

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