zhu chenqiu's answer to Jane lee's Secondary 3 E Maths Singapore question.
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is this correct?
Date Posted:
3 years ago
Sorry teacher, my brother also sane answer but it’s wrong. Thats i try to help him
The answers by BOTH the tutor and the brother are correct.
I'm pretty sure the system is rigged.
I'm pretty sure the system is rigged.
Anyway part b has a shorter method:
tan inverse of (7 / answer from part a)
tan inverse of (7 / answer from part a)
Part d is tan inverse of (7 / answer from part c).
Jane, you can ask your brother to check with his teacher.
I did the same question myself and obtained the same answers for the first two parts.
I did the same question myself and obtained the same answers for the first two parts.
TQ teacher. I tell my brother not to worry. The answer is correct.
Thank you so much to both teacher helping my bro.
Thank you so much to both teacher helping my bro.
You try 33.4 or 33.6 for part a). It might be a truncation error on the teacher side
A good system will allow the answer as well.
The other day I looked at my student doing his online work. He put a different form of the answer and it’s still marked correct.
The other day I looked at my student doing his online work. He put a different form of the answer and it’s still marked correct.
The thing is, you don't know which system this is. So might as well try those two. If still cannot, then the student can report this issue to the teacher.
33.4 is more likely, since the calculated value is 33.46 I think.
Or the teacher who set the question may wrongly put the calculated value in radian mode. We never know.
Or the teacher who set the question may wrongly put the calculated value in radian mode. We never know.
I see a 'copyright @ MOE' so it's likely to be SLS.
TQ
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