You are Here: Home

# Trig question

Announcements Posted on
Talking about ISA/EMPA specifics is against our guidelines - read more here 28-04-2016
Uni student? Want a Samsung Galaxy S7? You could win one by taking our quickfire survey 15-04-2016
1. Hey guys,

I was wondering if you could explain this question to me
solve the equation cos2x= the squarerootof 3 sin2x

if i bring sin 2x under cos2x to get tan2x

so the new equation would be tan2x= squareroot of 3 would it not?
2. (Original post by HEY_101)
Hey guys,

I was wondering if you could explain this question to me
solve the equation cos2x= the squarerootof 3 sin2x

if i bring sin 2x under cos2x to get tan2x

so the new equation would be tan2x= squareroot of 3 would it not?

Square both sides, to get,

Remember,

This will give you a quadratic.
3. Unless

in which case

No

4. (Original post by raheem94)
the square root is only on the 3 not the sin 2x
5. (Original post by HEY_101)
I was thinking that as well but the answers says tan2x= 1/ square root of 3.

Divide both sides by

I don't understand why are you getting confused at such a simple thing.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 5, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How to predict exam questions

No crystal ball required

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams