C3 trig

http://pmt.physicsandmathstutor.com/download/Maths/A-level/C3/Papers-Edexcel/June%202007%20QP%20-%20C3%20Edexcel.pdf

I hate it simply because it's bs. Everytime they'll give me another way to do it which gives the right answer. Everytime they'll do it and i can do the way they do it yet i can't think of they way they do it myself. Everytime they do something bs and i think to myself there's 50 million dam things you could do which are all valid and this is the way to do it ._____________.

Every dam time
q7a
here's where i got up to
$\dfrac{sin^2 \theta +cos^2 \theta}{sin \theta cos \theta}$

$\dfrac{1}{sin \theta cos \theta}$

then i got stuck

then suddenly the mark scheme decides to multiply by 2. Tf mark scheme, Why doesn't it just multiply by 4. Why can't i think of ****ing multiplying by the dam number 2. It's just pathetic and i've done all the stupid jan c3 edexcel papers and still i can't do trig.

help me die pls
i dun wanna live anymore

http://pmt.physicsandmathstutor.com/download/Maths/A-level/C3/Papers-Edexcel/June%202007%20QP%20-%20C3%20Edexcel.pdf

I hate it simply because it's bs. Everytime they'll give me another way to do it which gives the right answer. Everytime they'll do it and i can do the way they do it yet i can't think of they way they do it myself. Everytime they do something bs and i think to myself there's 50 million dam things you could do which are all valid and this is the way to do it ._____________.

Every dam time
q7a
here's where i got up to
$\dfrac{sin^2 \theta +cos^2 \theta}{sin \theta cos \theta}$

$\dfrac{1}{sin \theta cos \theta}$

then i got stuck

then suddenly the mark scheme decides to multiply by 2. Tf mark scheme, Why doesn't it just multiply by 4. Why can't i think of ****ing multiplying by the dam number 2. It's just pathetic and i've done all the stupid jan c3 edexcel papers and still i can't do trig.

help me die pls
i dun wanna live anymore

I would've noticed the similarity between the denominator and the Identity $sin2x= 2sinxcosx$ and then worked from there.
Identities do take a while to get used to though, so don't worry if you can't 'spot' it straight away at the moment.

I'd recommend looking at some questions in here
http://madasmaths.com/archive_maths_booklets_standard_topics_trigonometry.html

i would've noticed the similarity between the denominator and the identity $sin2x= 2sinxcosx$ and then worked from there.
Identities do take a while to get used to though, so don't worry if you can't 'spot' it straight away at the moment.

I'd recommend looking at some questions in here
http://madasmaths.com/archive_maths_booklets_standard_topics_trigonometry.html

firstly, calm down. It's not that deep, it's just maths.

Note the following: $2\csc 2\theta = \frac{2}{sin2\theta}=\frac{2}{2\sin\theta\cos\theta}=\frac{1}{ \sin \theta \cos \theta}$

that's the point guise i get that. Why can't i do that even after a multitude of papers?

I wouldn't send him there bro.

If he's on the verge of killing himself, I don't think TeeEm's questions will make him feel any better...

Your final answer was $\frac{1}{\sin \theta \cos \theta}$, correct?

Technically, you got the answer right since $2\csc 2\theta = \frac{1}{\sin \theta \cos \theta}$. So, I don't think you'd lose marks...

I wouldn't send him there bro.

If he's on the verge of killing himself, I don't think TeeEm's questions will make him feel any better...

that's the point guise i get that. Why can't i do that even after a multitude of papers?

Probably because you don't know the identities well enough - it's not the exam paper's fault.

For C3 you need to know the double angle identities off by heart so you can spot things like $\sin \theta \cos \theta$ is similar to $2\sin \theta \cos \theta = \sin 2\theta$.

x/QUOTE]

Complain to Edexcel or something.

Edit: On a more serious note though, just get some more practice with these types of questions if you struggle. TeeEM has a load of booklets which he has written solutions for!