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# trig-a level ocr watch

1. (Original post by PrimeLime)
Yeah further maths is bit better in that regard. FP1 is certainly getting a lot better at testing understanding, but D1... XD that's LITERALLY just algorithms.
Hahaha yeah - that's why I loved D1

Well, that and I do computing
2. (Original post by T_H_E)
lol or maybe i am just dumb:/
edit: btw if u just rearrange
4 sin2ϴ-1=0
u get
sin2ϴ=1/4, then u have a same problem?
Yeah. sinϴ=½ and cosϴ=sqrt{3}/2 have the same solutions, I was just following on from where you left off. Hope this helps!

p.s. you should know this result as ϴ=30 degrees or pi/6 radians (0<ϴ<90/0<ϴ<pi/2)
3. (Original post by Andy98)
True, it's just usually I find people seem to learn better when you're patient with them
Sorry if I seemed impatient with my comments, didn't feel like I was but I'll take that into account.
4. (Original post by Hazel37)
Just square root cos^2 so you get
Cos x = +/- root3/2
The use the usual cast diagram to solve for your angles!
So if you had the interval 0<x<360
the angles would be: 30,150,210,330
yup u r right (ans are at the back, but couldnt figure out how to get there
5. (Original post by Hazel37)
Just square root cos^2 so you get
Cos x = +/- root3/2
The use the usual cast diagram to solve for your angles!
So if you had the interval 0<x<360
the angles would be: 30,150,210,330
Ngl, I've never used a CAST diagram before

Plus, try to refrain from posting solutions. It doesn't help the user learn, and it's technically against site rules.
6. (Original post by PrimeLime)
Sorry if I seemed impatient with my comments, didn't feel like I was but I'll take that into account.
It's OK
7. (Original post by Andy98)
Ngl, I've never used a CAST diagram before

Plus, try to refrain from posting solutions. It doesn't help the user learn, and it's technically against site rules.
The CAST method is the bomb.
Soz, I couldnt think of another way to help. I wasnt even aware they were rules tbh.
8. (Original post by Hazel37)
The CAST method is the bomb.
Soz, I couldnt think of another way to help. I wasnt even aware they were rules tbh.
Don't even know how the things work - it's those horrid circles isn't it?
9. (Original post by PrimeLime)
Well you're forgetting that you need to consider the negative square root too.
Sorry, I forgot to type it. I completely agree with what you said about people being taught to memorise identities etc. rather than getting to grips with the reason why something works - that's why I enjoy STEP so much.
10. (Original post by vectorpi)
Sorry, I forgot to type it. I completely agree with what you said about people being taught to memorise identities etc. rather than getting to grips with the reason why something works - that's why I enjoy STEP so much.
Exactly why I enjoy STEP as well! (Gosh there's a lot of people on TSR doing STEP!) The only qualm I have is that A-Level does nothing to prepare you for things like STEP, so it really takes some getting used to for a lot of people. STEP is a great example of what real maths is .
11. (Original post by PrimeLime)
Exactly why I enjoy STEP as well! (Gosh there's a lot of people on TSR doing STEP!) The only qualm I have is that A-Level does nothing to prepare you for things like STEP, so it really takes some getting used to for a lot of people. STEP is a great example of what real maths is .
It is a bit of a shame really, I know the first time I looked at a STEP question, my confidence plummeted, because, despite having a great maths department, I'd never been introduced to something like that...
12. (Original post by vectorpi)
It is a bit of a shame really, I know the first time I looked at a STEP question, my confidence plummeted, because, despite having a great maths department, I'd never been introduced to something like that...
Felt a bit like that when I looked at a STEP III paper XD.
But I'm now pretty confident with STEP I. I've been doing individual questions under timed conditions and it's going well. I think the idea of doing most of my prep under timed conditions is going to help a lot for the exam.
You applying to Cambridge for maths? Or Warwick? Or both like me? XD
13. (Original post by PrimeLime)
Felt a bit like that when I looked at a STEP III paper XD.
But I'm now pretty confident with STEP I. I've been doing individual questions under timed conditions and it's going well. I think the idea of doing most of my prep under timed conditions is going to help a lot for the exam.
You applying to Cambridge for maths? Or Warwick? Or both like me? XD
I reckon I'll apply to both, but I need to do more research over the summer into Warick and perhaps some of the other London unis

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