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secondary 2 | Maths
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Nancy
Nancy

secondary 2 chevron_right Maths chevron_right Singapore

pls help

Date Posted: 4 years ago
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Ignatius Yeo
Ignatius Yeo's answer
36 answers (Tutor Details)
1st
Firstly, calculate all the angles. To find length CD, apply sine rule.
One rule to remember is whenever there is a 45 degrees right-angle triangle, adjacent is always equal to opposite. In this case, to find length AB, we can find length AD since AB=AD. Hope it helps:)