Eric Nicholas K's answer to Ashley's Secondary 3 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Just one of the several possible ways to approach this question. Sorry for the badly drawn diagram; I had not expected angle ACB to be exactly 90 degrees.