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secondary 4 | A Maths
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Ong Jia Zhi
Ong Jia Zhi

secondary 4 chevron_right A Maths chevron_right Singapore

How to prove!!!

Date Posted: 4 months ago
Views: 24

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Eric Nicholas K
Eric Nicholas K's answer
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I have not managed to find other approaches for this question yet; using double-angle formulae does not seem to accomplish much.