Darren Lee's answer to Lucas loke's Secondary 4 E Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Darren Lee
Darren Lee's answer
7 answers (Tutor Details)
Part (i)

DO TAKE NOTE: the 90° you labelled is incorrect. No details were given to you saying that it is 90° so do not assume so.