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# Edexcel A2 C4 Mathematics June 2015 - Official Thread watch

1. (Original post by cfcdrog)
Same but Did we have to put plus and minus?
2. (Original post by jf1994)
I used the sine rule, anyone else?
Ye i used sine
3. (Original post by IHateC12k14paper)

Here's the poll guys: http://strawpoll.me/4648207/r
It's a public forum, anyone has the right to post what they want.
4. (Original post by milogillot)
no k=2 since you had to square root 4cos^2
It was 4. you multiplied by 2cos(theta) so it was 2cos(theta) * 2cos(theta)
5. What was p/q fr the 1st q?
6. VOTE NOW ON HOW YOU FOUND THIS EXAM!

Note: C4 JUNE 2015 UK paper ONLY!

.
7. For Q6 b) was it 4pi/3 + 2root3/4
8. Did anyone got 3199/ln9 in the last question :'(
9. lol easier? i'm getting out of this world
10. (Original post by jf1994)
I used the sine rule, anyone else?
I used the Sin i fould the foot of the perpendicular which i guess was the shortest distance
11. (Original post by Iridann)
It was 4. you multiplied by 2cos(theta) so it was 2cos(theta) * 2cos(theta)
its 2. while mutiplying 4 and 4 cancel out
12. (Original post by cfcdrog)
For Q6 b) was it 4pi/3 + 2root3/4
that's right
13. (Original post by anndz3007)
Did anyone got 3199/ln9 in the last question :'(
Nah it was 13pi/ln3
14. Poll vs poll - who really gives a ****?
15. (Original post by ninetail9990)
its 2. while mutiplying 4 and 4 cancel out
should be 4
d(x)=2cos(theta) d(theta)
and y=2cos(theta)
16. (Original post by Ripper Phoenix)
lol easier? i'm getting out of this world
It was hard wasnt it? I have never seen a ques like the last one in any paper
17. (Original post by jf1994)
Poll vs poll - who really gives a ****?
I agree. Stupid spammers.
18. (Original post by anndz3007)
Did anyone got 3199/ln9 in the last question :'(
YES ! I DID!
Spoiler:
Show
Jks nope LOL
19. (Original post by anorris13)
It is calculus, it has to be in radians
No it doesn't. If anything, that particular question had to be answered in degrees. However, they may except both.
20. (Original post by Iridann)
Nah it was 13pi/ln3
How you intergrade 9^2x, i put u= 9^x

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