Ask Singapore Homework?

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



Ask ManyTutors

Question

secondary 4 | A Maths
One Answer Below

This question need another answer.

Answer This Question
Hello
Hello

secondary 4 chevron_right A Maths chevron_right Singapore

Thanks

Date Posted: 3 years ago
Views: 259
add a comment

See 1 Answer

Ask ManyTutors
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
An Yi
An Yi's answer
76 answers (Tutor Details)
Hello, this is how I did it. Since both sides of the equation has “2x”, you can sub 2x = y, and no need to use the cos2x or sin2x formulas. Hope this helps!
Eric Nicholas K
Eric Nicholas K
3 years ago
Actually, secant is 1 divided by cosine…