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secondary 4 | A Maths
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renee
Renee

secondary 4 chevron_right A Maths chevron_right Singapore

How do u do this

Date Posted: 3 years ago
Views: 212

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Mr Ang
Mr Ang's answer
347 answers (A Helpful Person)
1st
Kindly verify the workings eh, thanks.
Eric Nicholas K
Eric Nicholas K
3 years ago
I suppose that the 3rd quadrant is rejected as the principal value of that inverse cosine thingy lies in the 2nd quadrant
Mr Ang
Mr Ang
3 years ago
Indeed you are right about the part when principal value is involved, it is only second quadrant.

But as the question has no other information, I took it as a "non-principal value" question. Haha.