need help with this qn, pls explain too :)

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secondary 3 | A Maths
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secondary 3 A Maths Singapore

need help with this qn, pls explain too :)

Date Posted: 3 years ago

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Date Posted: 3 years ago

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Date Posted: 3 years ago

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Questions like this must always apply
- Pythagoras Theorem
- Trigo ratios
- Sine rules / Cosine rule

Date Posted: 3 years ago