why is 3 c?

#### lulwut

##### New Member
qn 2 is b isnt it?
MC 2 was the inverse function, which is reflected about the line y=x, so it would have to be d) not b)

#### lulwut

##### New Member
why is 3 c?
You had to take the AOC reflex angle to satisfy the rule that AOC=2*ABC

#### MisterHewson

6 is B 100%

##### Well-Known Member
1) c
2) d
3) c
4) d
5) a
6) a
7) a
8) d
9) b
10) c
I had the exact same. Let's hope that they're all right.

#### pHyRe

##### Active Member
6 is B, asked someone who would be close to a state rank. It's 100% = state rank for 3u right?

#### MisterHewson

##### New Member
6 is B, other than that they're correct

#### RealiseNothing

##### what is that?It is Cowpea
6 is B, asked someone who would be close to a state rank. It's 100% = state rank for 3u right?
It's 100% + 1st internally + good 2U or 4U marks usually.

Though you could be like 2nd internally if you and 1st destroyed the test and were close internally I guess.

#### AnimeX

##### Member
Wow I did so bad in the multiple choice.

1) c
2) d
3) c
4) d
5) a
6) a [I had no idea if it was a or b, went with a at the end because I thought it looked more right..]
7) a
8) c [misread limits, I saw it as 0<theta<pi/2 ]
9) c [I read c as arccos(-x), so dumb..]
10) c

I'm looking at like a 7/10 right? damn I needa learn to read these questions properly..

#### lilyguu

##### New Member
1 C
2 D
3 C
4 D
5 A
6 A
7 A
8 C
9 B
10 A
From what i remember

#### Recondit

##### ヽ(" `Д´)ﾉ
1) c
2) d
3) c
4) d
5) a
6) b
7) a
8) d
9) b
10) d - I had a 0.25 probability of guessing correctly but nooo

#### superSAIyan2

##### Member
C d c d a a (damn its b) a d b c

#### P.T.F.E

##### Member
How is 10 (C), i got (D)

#### drunkenmonkee37

##### Member
c
d
c
d
a
b
a
d
b
c
checked carrots solution

#### Makematics

##### hwpo13
Cambridge 3U year 12, page 33:

"The general solution of $\bg_white \sin(x)=a$ is $\bg_white x=\sin^{-1}(a) + 2n\pi$"

Divide by 2 gets A doesn't it?
no thats not what it says, i just checked. i think your wrote one of the cases. on the line below it has the thing with (-1)^m

#### panda15

##### Alligator Navigator
I lost 4 marks the whole test. 3 of them were in MC

FUCK MULTIPLE CHOICE

6 is a

#### anomalousdecay

After a massive discussion, it's definitely B lol.
Its definitely B. Check any textbook. If it says A then burn that textbook.

In my opinion its a bad question. ROTE learners galore.

#### Makematics

##### hwpo13
Its definitely B. Check any textbook. If it says A then burn that textbook.

In my opinion its a bad question. ROTE learners galore.
lol i didnt know the general solution for sin. i suspected it was B, and i confirmed it by testing for n=0, n=1, etc. not that hard to do as long as you understand sin is positive in 1st and 2nd quadrants.