Shawn's answer to kenji .'s Secondary 2 Maths Singapore question.

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Shawn
Shawn's answer
110 answers (A Helpful Person)
1st
After proving that angle ADC is 90° using Pythagoras Theorem, you need to use trigo to find DB and AB since angle ADB is also 90°
kenji .
Kenji .
2 months ago
thank you!