An Yi's answer to ZL's Secondary 4 E Maths Singapore question.

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An Yi
An Yi's answer
76 answers (Tutor Details)
1st
Hello, apart from your convention formula of 1/2*b*h to find the area of triangle, you can use the formula 1/2*b*c*sinA (which can be found in your formula list if I'm not wrong).

The answer I got is 28.9cm²
Eric Nicholas K
Eric Nicholas K
3 years ago
The question is actually about having too much data in a question, and this actually backfires in this situation as the fourth value of BC = 8 cm seems incorrect.