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

# Official Edexcel C3 Discussion Thread watch

1. (Original post by MIKE ESSIEN IS QUITE SICK)
i expanded it and get 2sinxcosx+1-2sin^2x=0 but i cant get it to 1 trig
I know right? Hmmm, factorise sinx out... 1 sec, i'm gonna try this again
2. If we discretely put £5 inside the paper, do you think the examiners will give us a higher mark?
3. (Original post by Get Cape.Wear Cape.Fly.)
I know right? Hmmm, factorise sinx out... 1 sec, i'm gonna try this again
wouldent you take the cosx out by:
cosx=1-2sin^2x/2 ?
4. (Original post by htn)
Only difficult question there was the one that asks Sin5x + Sinx. What part did you get stuck on?
Q 2,4,5 and 6 lol. All the parts.....

That's just basically the whole paper.
5. What would you say is the hardest past paper from June 05 to June 09?
6. Apparently June 06 was pretty difficult.
7. (Original post by Get Cape.Wear Cape.Fly.)
Are you two brothers?
Hahaha no unfortunately not
michael essien is a footballer
8. (Original post by Get Cape.Wear Cape.Fly.)
Are you two brothers?
lol naa
9. (Original post by RHCPfan)
What would you say is the hardest past paper from June 05 to June 09?
Jan 07.
10. I'll take another look at June06 and Jan 07 then. Thanks.
11. Will they ask us to draw graphs of sec/cosec/cot? not sure if I should go over that..
12. (Original post by Yuuki)
Will they ask us to draw graphs of sec/cosec/cot? not sure if I should go over that..
it's on the specification so yes it is possible. Unlikely, but possible so it's worth giving it a quick look, it's nothing too complicated though.
13. It's a possibility. Just remember that cosec and sec are paraboli over and under their graphs, and cot is basically tan but going the other way round, with asymptotes at 0, 180, 360.
14. Thanks I'll take a quick look now - every mark counts at A2
15. (Original post by MIKE ESSIEN IS QUITE SICK)
how would you work out sin2x+cos2x=0

16. (Original post by Get Cape.Wear Cape.Fly.)
That's called cheating, you cheater! fool!
its was a joke......
17. (Original post by MIKE ESSIEN IS QUITE SICK)
how would you work out sin2x+cos2x=0
divide the equ. by cos2x
it will be like this
tan2x=-1
then solve
18. (Original post by taherq)
divide the equ. by cosx
it will be like this
tan2x=-1
then solve

Thankyou
19. the paper was a joke
20. They can ask about any trig graph + arcsin arccos + arctan.

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: June 14, 2010
Today on TSR

### How do I turn down a guy in a club?

What should I do?

### My dad said he's stalked me at uni!

Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE