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secondary 4 | A Maths
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Benjay
Benjay

secondary 4 chevron_right A Maths chevron_right Singapore

Need help thanks!

Date Posted: 1 year ago
Views: 162

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Christmas MT
Christmas Mt's answer
3275 answers (A Helpful Person)
1st
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.
Benjay
Benjay
1 year ago
Hi, how did you know the formula used in the first step cos we dont learn that in schl.
Christmas MT
Christmas MT
1 year ago
Its in ur mf26