Kahwai's answer to amelia's Secondary 3 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Kahwai
Kahwai's answer
232 answers (A Helpful Person)
1st
0 0
| Sin(x/2) |< 1

Therefore max value is 1

And -3 is the minimum