Eric Nicholas K's answer to Georgia Jansen's Secondary 4 A Maths Singapore question.
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Three things you need to know here.
1. Usage of addition angle formulae by splitting the angles into the sum or difference of special angles
2. Knowledge of special angles and their values
3. Rationalisation of surds
1. Usage of addition angle formulae by splitting the angles into the sum or difference of special angles
2. Knowledge of special angles and their values
3. Rationalisation of surds
Date Posted:
5 years ago