Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.
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There should be a simpler form for this. Will look again later.
Date Posted:
5 years ago
I realised that there is a cos A at the end. If I have time later and can still remember, I will see if there is another way to evade the square roots, since I do not like the sight of square roots. Now doing the other two.
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