Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.


secondary 4 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Ong Jia Zhi
Ong Jia Zhi

secondary 4 chevron_right A Maths chevron_right Singapore

How to prove!!!

Date Posted: 2 months ago
Views: 19

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
1704 answers (Tutor Details)
I have not managed to find other approaches for this question yet; using double-angle formulae does not seem to accomplish much.