Eric Nicholas K's answer to LockB's Secondary 2 Maths Singapore question.
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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.
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.
Date Posted:
4 years ago
To add, part a also requires Sec 3 E Maths knowledge.
thx for helping!!
thx alot!! can u help me with another qn,?i just posted it and desperately need help
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