Nicholas Mak's answer to Yi Jun's Secondary 4 A Maths question.
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Hello, this question is testing the use of trigonometric Factor Formula, which I think is removed from the O Level syllabus. Do check with your teacher on this!
Date Posted:
7 years ago
right, I just asked and he said it was out of the syllabus, thank you for your time still !!
You’re welcome!
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