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secondary 4 | A Maths
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Once you have obtained the answer for part c, can you explain why the answer is 7.63 and not 7.67?
I used 4sf from the previous part because I uses the reasoning that it was an intermediate answer.
Answer sheet says it's 7.63 , but I have gotten 7.67 from using 4s.f of angle AOC in radians ( 0.6435 instead of 0.644 )
Date Posted: 7 years ago
Views: 452
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It is because part a's answer for angle AOC is already deemed to be 0.644 (3sf), so for future parts of the question, you will need to use that 3sf answer instead of 4sf. So if 0.644 is used in part c, the answer obtained is 7.63.
Date Posted:
7 years ago
Thank you for clarifying!
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