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secondary 3 | A Maths
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Trigo identities
Date Posted: 6 years ago
Views: 413
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done
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clear
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here u go
Date Posted:
6 years ago
May i clarify, at your 3rd last step, did you cancel only 'cos A' out or 'cos A + 1'?
cosA+1 :)
Thank you so much for taking your time to help me!! :)
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