Jiayang's answer to Shermel Lee Lee's Secondary 3 A Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Jiayang
Jiayang's answer
1883 answers (Tutor Details)
1st
Once you get the first step, the rest is just a direct application of the identities in your formula sheet.
Shermel Lee Lee
Shermel Lee Lee
6 years ago
thank youu!!