OCR C2 Exam May 18th 2012

Ohhh right yeah. Thank you! But in the mark scheme it said ABC = 360 (150 + 110) = 100 and I was wondering how the 150 came about?

Oh I really don't know! bit strange! for the next bits did you Cosine rule for part ii) then sine rule for part iii)

Reply 181

choccandy21

4

Original post by peachesandcream77

did anyone do solomon papers.... ?

What actually are the Solomon papers?

Reply 182

EllHv1

1

Original post by rhydspence

What kind of questions are they likely to ask on special triangles and trig ratios of 30, 45 and 60 degrees? I don't think I've found any past paper questions but apparently we should know them :L

I don't know them. Didn't really think we needed to, I mean, that's what a calculator is for? :P

Reply 183

BillyFord188

Personally I'm hoping for a big log question, and a big graph question worth quite a few marks each, and I hope the AP/GP questions are straight forward, I find they can potentially be horrible (for example May 2009 question 9), good luck to everyone taking it though!

Reply 184

katles

7

Original post by laurenb11

Oh I really don't know! bit strange! for the next bits did you Cosine rule for part ii) then sine rule for part iii)

yeah I used cosine rule for part ii), the mark scheme uses the sine rule for part iii) but I'm confused about that!

Reply 185

Genesis2703

5

Original post by BillyFord188

Personally I'm hoping for a big log question, and a big graph question worth quite a few marks each, and I hope the AP/GP questions are straight forward, I find they can potentially be horrible (for example May 2009 question 9), good luck to everyone taking it though!

There hasnt been a very hard GP/AP question since 2009, so I would not be suprised if you fear came true tommorrow :wink:

I dont mind a big log question, as long as it isnt in some weird format, if its hard but with stuff I know then I dont mind... if I have to guess myself through it i'll be sad.

Reply 186

laurenb11

Original post by katles

yeah I used cosine rule for part ii), the mark scheme uses the sine rule for part iii) but I'm confused about that!

You'd do sinB/b = sinC/c to angle at C. You'd then need to minus that from 360 to get the bearing, i think :biggrin:

Reply 187

rhydspence

Original post by EllHv1

I don't know them. Didn't really think we needed to, I mean, that's what a calculator is for? :P

Yeah they do seem a bit pointless! Glad I'm not the only one who doesn't know them xD

Reply 188

0day

1

Original post by BillyFord188

Personally I'm hoping for a big log question, and a big graph question worth quite a few marks each, and I hope the AP/GP questions are straight forward, I find they can potentially be horrible (for example May 2009 question 9), good luck to everyone taking it though!

What is AP/GP?!

Reply 189

EllHv1

1

Original post by rhydspence

Yeah they do seem a bit pointless! Glad I'm not the only one who doesn't know them xD

Exactly! I can kinda remember the triangles if necessary, but I really can't even see how they could ask a question on them? :lol:

Reply 190

megank

5

HELP!! how do you find the area above a curve??/ :O

Reply 191

katles

7

Original post by megank

HELP!! how do you find the area above a curve??/ :O

Do you mean using integration to find the areas between a curve and the x or y axis?

Reply 192

gratoey

In the Jan 2012 paper how to do question 13 ii) ???

Reply 193

samjj8

1

Original post by EllHv1

I don't know them. Didn't really think we needed to, I mean, that's what a calculator is for? :P

I think they tend not to ask the special triangle questions because you can use a calculator. :smile:

But I seem to remember doing a bit of it in C3.

(edited 11 years ago)

Reply 194

Konshi

OP

Willing to put money down that one of the big end questions is a Geometric tomorrow. I sincerely hope that I'm wrong though.

Reply 195

0day

1

Seriously guys, What is AP/GP?!

Reply 196

Konshi

OP

Original post by 0day

Seriously guys, What is AP/GP?!

Arithmetic Progression/Geometric Progression

Reply 197

samjj8

1

Original post by 0day

Seriously guys, What is AP/GP?!

AP - Arithmetic Series

8,13,18,23,28,...

Constantly adding 5 on, the nth term is 5n+3.

GP - Geometric Series

3,6,12,24,48,...

Constantly multiplying by 2 (the common ratio), the nth term is 3x2^(n-1)

All the formulas are in the book...

all you may need to know is that sigma, which is a greek S means "sum of" - and the formula is in the book.

Also... general form: a + a+d + a+2d + a+3d + a+4d + ...

where a is the first term and d is the common difference each time.

Also: a + ar + ar^2 + ar3 + ar4 + arn-1

where a again is the first term and r is the common ratio like mentioned above.

Pretty much it.

(edited 11 years ago)

Reply 198

peachesandcream77

1

hmm dont know if i should stay up and do a bit more or wake up earlier.. ?