Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.
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Q13, Q14
Date Posted:
5 years ago
For qns 13 how u know is 12
We use Pythagoras theorem to obtain 12. Some common numbers to know in Pythagoras theorem are 3 4 5, 6 8 10, 5 12 13, 9 12 15, 8 15 17 etc. Now, the horizontal line segment 12 is to the right of the y-axis, hence positive 12.
Not understand
Ok will write up the same question with more details later
Looking at this question again shirtly
Ok.
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