Wendy Ke Hui Fen's answer to tiffany's Secondary 2 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Wendy Ke Hui Fen
Wendy Ke Hui Fen's answer
14 answers (Tutor Details)
Try to see which sides are given (o,a or h) and which angles are given, then work around with the numbers to find the unknown. Hope it helps:)