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secondary 3 | E Maths
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Hi, can anybody advise me the working solution for this question please? Many thanks :)
Date Posted: 4 years ago
Views: 296
Good afternoon Candice! This question looks tough...I will have a look at a later time.
Thank you so much Mr Eric :D
I can do all the questions in this chapter of the textbook except for this question which I have tried for a long time but still can't get the answer :(
I am thankful for your timely help. Look forward to your advice :)
I can do all the questions in this chapter of the textbook except for this question which I have tried for a long time but still can't get the answer :(
I am thankful for your timely help. Look forward to your advice :)
Attempting now, since I woke up not too long ago
I think the more correct term is:
Sifu Eric
Sifu Eric
As a start, the scaling of that diagram is very terrible
Yes Mr Eric, I fully agree with you, the scaling of that diagram is indeed very terrible.
See 4 Answers
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You will always need to add your own lines and labels to help visualise and help with working presentation.
Date Posted:
4 years ago
Thanks Mr Tan. I appreciate your advice on the working solution for this question. Pls take care and have a good weekend :)
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Hope this helps.
Date Posted:
4 years ago
Triangle ODE is an equilateral triangle. Hence, the angle DOE is 60 deg.
Thanks Mr Wong for your working solution and advice to this question.
Pls take care and have a good weekend :)
Pls take care and have a good weekend :)
You are welcome.
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Good afternoon Candice! Here are my workings for the first part. Hang on for the second part.
Date Posted:
4 years ago
That is awesome ! Thanks for your explanation, sifu Eric :)
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Good afternoon Candice! Here are my workings for the second part.
I assume you have not learnt the formula of a triangle,
0.5 * length * length * sin (included angle)
for the equilateral triangle. But if you have already learnt it, you can use it directly.
As for the areas of sectors and lengths of arcs, these can be thought of as proportions of a circle. Because if you cut a circle into four equal parts, the area and the arc length is also cut into four equal parts.
For E Maths, your final answer should be left in decimals.
I assume you have not learnt the formula of a triangle,
0.5 * length * length * sin (included angle)
for the equilateral triangle. But if you have already learnt it, you can use it directly.
As for the areas of sectors and lengths of arcs, these can be thought of as proportions of a circle. Because if you cut a circle into four equal parts, the area and the arc length is also cut into four equal parts.
For E Maths, your final answer should be left in decimals.
Date Posted:
4 years ago
Noted with thanks on your excellent advice, Mr Eric.
Yes, I will bear that in mind on the different between E maths and A maths final answers presentation, thanks again for highlighting. Really appreciated it :)
Stay safe, pls take care and have a good weekend :D
Yes, I will bear that in mind on the different between E maths and A maths final answers presentation, thanks again for highlighting. Really appreciated it :)
Stay safe, pls take care and have a good weekend :D
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