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secondary 3 | E Maths
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Date Posted: 2 years ago
Views: 368
ABC similar to DEC,
therefore AC/DC = AB/DE = 9/12
ACF similar to ADE
therefore CF/DE = AC/AD = 9/(9+12) = 9/21
CF = (9/21) x DE = 36/7
therefore AC/DC = AB/DE = 9/12
ACF similar to ADE
therefore CF/DE = AC/AD = 9/(9+12) = 9/21
CF = (9/21) x DE = 36/7
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done
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clear
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Hi! This is the method i used. Not sure if the final answer is correct, but just see if the method makes sense or not!
Date Posted:
2 years ago
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