Zhi Hui Koh's answer to Tong Chao's Secondary 4 E Maths question.
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(B) Realise that angle FEN is a right angle triangle. Then proceed to use Pythagoras’ theorem to find FN.
(C) Make use to the given length FE and EN to avoid error carried forward.
Use trigonometry (TOA CAH SOH) to find the unknown angle.
(C) Make use to the given length FE and EN to avoid error carried forward.
Use trigonometry (TOA CAH SOH) to find the unknown angle.
Date Posted:
6 years ago
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