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secondary 4 | E Maths
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secondary 4 chevron_right E Maths chevron_right Singapore

I need help with part b

Date Posted: 4 years ago
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Arnold K H Tan
Arnold K H Tan's answer
2178 answers (A Helpful Person)
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b ii) uses a common triangle, in order to calculate the answer, the 4th skill I teach my students.
The 3 other required skills for this topic are:
1. Ratio of areas based on similar triangles, as seen for b i)
2. Ratio of areas for triangles with the same height (1st part of working for b ii) )
3. Ratio of areas of triangles that share a common angle.