teacher zhang's answer to Ming's Secondary 3 A Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
for question (b)
try
cos4θ=cos(2*2θ)
try
cos4θ=cos(2*2θ)
Date Posted:
2 years ago
360 Tutoring Program