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Awkward Triangle
A triangle is given with the lengths written in of surd form. The challenge is to calculate the area of the triangle, without recourse to a calculator. Two methods are investigated. The first uses both the cosine rule and the sine rule. The second introduces Heron’s formula, providing a good opportunity for the manipulation of surds.
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Awkward Triangle: presentation 564.93 KB
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Awkward Triangle: support file 60.28 KB
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Awkward Triangle: printed resource 902.36 KB
Show downloads
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Awkward Triangle: presentation 564.93 KB -
Awkward Triangle: support file 60.28 KB -
Awkward Triangle: printed resource 902.36 KB
Download all files as a .zip1.24 MB
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