Two right triangles sharing a side

Two right triangles sharing a side

Secondary 2
TGM Original Questions

Triangles \(ABC\) and \(BCD\) share \(BC\), with \(\angle ABC=\angle BCD=90^\circ\). Given \(AB=15\) cm, \(\angle BAC=54^\circ\) and \(\angle BDC=63^\circ\), find

  1. \(BC\),
  2. \(BD\).

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) \(20.6\) cm; (b) \(23.2\) cm.

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