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secondary 2 | Maths
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secondary 2 chevron_right Maths chevron_right Singapore

pls help with this qn as idk how to do, can refer to the ans below

a) sqrt3/2
c) 12cm

sqrt=squareroot

Date Posted: 4 years ago
Views: 594

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
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For part b, you can also sine inverse the angle in part one to find acute angle AEC, then from there find angle CED and then angle ECD.

For part c, you will need knowledge from Sec 3 E Maths that an angle opposite the diameter in a triangle inscribed in a semicircle is always 90 degrees. This topic is stated as Sec 2 Maths, and part c is therefore not doable at the Sec 2 level.
Eric Nicholas K
Eric Nicholas K
4 years ago
To add, part a also requires Sec 3 E Maths knowledge.
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4 years ago
thx for helping!!
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4 years ago
thx alot!! can u help me with another qn,?i just posted it and desperately need help