Bryant Lam Hong Sheng's answer to Chua Jia Xuan Fiona's Secondary 4 A Maths question.
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The reason why there is 4 answers instead of 2 is because the angle concerned is 2x. So you have to add one more round which means to add 2pi to the initial 2 answers to give you 4 answers in total
Date Posted:
7 years ago
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