x Turn on thread page Beta
 You are Here: Home >< Maths

# Simplify watch

1. (Original post by SophieL1996)
2
So now you can simplify it fully
2. (Original post by Robbie242)
So now you can simplify it fully
2(sin^2\theta + cos^2\theta)=2 ? apparently the answer is 4
3. (Original post by SophieL1996)
2(sin^2\theta + cos^2\theta)=2 ? apparently the answer is 4
Yes, remember the 2 from earlier? add that on
4. (Original post by SophieL1996)
2(sin^2\theta + cos^2\theta)=2 ? apparently the answer is 4
Use $$to help in your posts ... look at mine and Robbie's Go back to your original question and see where this 2 fits in 5. (Original post by Robbie242) Yes, remember the 2 from earlier? add that on ah yes so it does =4, how come you add rather than subtract, as it was on the LHS and we are moving it to the right ? 6. (Original post by SophieL1996) ah yes so it does =4, how come you add rather than subtract, as it was on the LHS and we are moving it to the right ? In this case no, we are just simplifying which you can substitute 2 in instead of the 7. (Original post by Robbie242) In this case no, we are just simplifying which you can substitute 2 in instead of the [ex]2sin^2\theta + 2cos^2\theta$$
Ok thanks!
8. (Original post by Robbie242)
In this case no, we are just simplifying which you can substitute 2 in instead of the
could you help me with this one please?
9. (Original post by SophieL1996)
could you help me with this one please?
Using the rule appreciate that can be expressed as
Now you can get terms purely in terms of sin and that will help you cancel out terms as seen later

note that later you'll see
10. (Original post by Robbie242)
Using the rule appreciate that can be expressed as
Now you can get terms purely in terms of sin and that will help you cancel out terms as seen later

note that later you'll see
I got to the point sin^4 theta + sin^2 theta - 2sin^2theta then I put it as sin^4 theta - sin^2 theta. where do I go from there?
11. (Original post by SophieL1996)
I got to the point sin^4 theta + sin^2 theta - 2sin^2theta then I put it as sin^4 theta - sin^2 theta. where do I go from there?

Expand and simplify. Hint: the will cancel out.

It's not purely because there's not a coefficient greater than 1 involved in the expansion of the bracket
12. (Original post by Robbie242)
Expand and simplify. Hint: the will cancel out.

It's not purely because there's not a coefficient greater than 1 involved in the expansion of the bracket
Oh yes thank you!!
13. (Original post by SophieL1996)
Oh yes thank you!!
No problem anytime

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:
Updated: April 10, 2013
Today on TSR

### Boyfriend slept with someone else

...we were on a break

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams