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junior college 1 | H1 Maths
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Alexa tan
Alexa Tan

junior college 1 chevron_right H1 Maths

How to get to step 2?

Date Posted: 6 years ago
Views: 402

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Jiayang
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1883 answers (Tutor Details)
1st
It's just your double angle formula for cosine. This is O level stuff.