Danny Low's answer to Ivey's Secondary 4 A Maths Singapore question.

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Danny Low
Danny Low's answer
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Hope this helps
J
J
3 years ago
Missing two solutions.

Since 0 ≤ x ≤ 2π ,then 0 ≤ 2x ≤ 4π.

You'll need to find all the values that satisfy , up to 4π inclusive.