A-Level Maths E2-01 Small-Angle Approximation: Geometrical Derivation
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- Опубліковано 6 вер 2024
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Sir i love your channel. First time watching it and browsing through your videos it is amazing. REALLY AMAZING. I just wanted to extend my gratitude to you and wish that you do not stop making these videos. It helps a lot. Thank you loads teacher ☺☺☺☺
Really glad I could help! You navigate everything much more easily on my website www.TLMaths.com
@@TLMaths ok will go through it sir 🖒🖒🖒
ah I see why u remade this. last time u said lets let x = theta/2 for the double angle formula. That was very hard to intuitively understand and didn't rly make sense to me. This is a much better explanation!
hello sir, would we ever have to derive these equations in the real exam
No you won't need to be able to derive them
My favourite maths teacher
I wish if you would be my school teacher
If tanx=sinx/cosx why can't we say cosx=x/x=1 when small?
Well it is, but it's not particularly good. 1-(θ^2)/2 is a better approximation. All of these, for sin, cos and tan can be expanded to include more terms and get more accurate approximations, but these approximations in the video are 'good enough'
Do we need to know the whole process or just the formula
None of the specifications say that you need to be able to replicate the derivation.
Thank you for the helpful video!
Do I need to watch the video about double angle formulae before watching this
Yes I would definitely advise that
@@TLMaths So we should go through "E6 Compound Angles & Equivalent Forms" before E2 "Small Angle Approximations"?
@@xander4003 The order of the playlist is based on the order of the DfE guidance document that was then used to build the exam board specifications. Unfortunately the order of the playlist is not always in the best order of delivery or learning.
best explanation
very useful
Why do you use C prime? Is that referring to differentiation?
No, a prime does not necessarily mean differentiation and it doesn't in this case. It is called C' as C approaches this point as the angle gets smaller.
Is this part of the AQA Alevel syllabus?
I don't see why a similar diagram couldn't be used to test your understanding of SOHCAHTOA and how the small angle approximation comes about. It's probably more likely to come up as either simplifying an expression, or through differentiation from first principles.
Man AQA is difficult a bit for me man
Edexcel, OCR A and OCR B (MEI) also have this
@@TLMaths yes sir
I am practicing AQA and other type of past papers for better understanding of maths but I am doing currently CIE A Level which is comparatively less difficult than any the other types of maths a level past papers. Thanks for the support🙏🙏🙏🙏🙏
who else came her after encountering simple pendulum?