Eric Nicholas K's answer to Annela's Secondary 4 A Maths Singapore question.
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Good evening Annela! Here are my workings for Q7.
Date Posted:
4 years ago
You can also use the length of line formula, which is actually no different from the Pythagoras theorem formula for the triangle I have drawn.
This is due to the fact that the distance between (9, 8) and (r, r) is r units.
This is due to the fact that the distance between (9, 8) and (r, r) is r units.
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