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secondary 3 | E Maths
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JONATHAN
JONATHAN

secondary 3 chevron_right E Maths chevron_right Singapore

need help with Q21, 23

Date Posted: 5 years ago
Views: 276

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
The only formulae you need to know here are

- area of triangle
- Pythagoras' Theorem

Length of lines, given two points, is essentially a Pythagoras' Theorem question.