Christmas MT's answer to Benjay's Secondary 4 A Maths Singapore question.
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Cos(pi/2) is 0
Sin(pi/2) is 1
Not much point in this question since it can be simplified even more to -2sinx
But anyways heres my answer.
Sin(pi/2) is 1
Not much point in this question since it can be simplified even more to -2sinx
But anyways heres my answer.
Date Posted:
1 year ago
Hi, how did you know the formula used in the first step cos we dont learn that in schl.
Its in ur mf26
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