A LEVEL MATHS Tricky Question - Parametric and Trig - The series starts here!

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A LEVEL MATHS IS HARD! LET ME HELP 👇

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Legend mate. Didn’t have a clue where to start. My immediate thought was to do arcsin(y/2) then sub into x=... now I know to rearrange to cos(t) = and sin(t) = and use Pythagorean identity.

AG-qlsy
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And so the journey begins...got around 20 days till first maths paper

MidnightStorm
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here a couple hours before the exam lol

aeshakhan-bybu
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I did it slightly differently, but more or less the same. After getting x + y = 2 sqrt(3) cos (t), I did cos t = sqrt (1 - sin^2 t) and so we can sub in sin t = y/2, sub in the expression for cos t in terms of y into x + y = 2sqrt 3 cos t, and then remove the square roots to get to the answer.

varunnayak
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Really insightful. I’ve done this question before in a much more complicated manner. I enjoy how simple you made it . Subscribed and liked

taod
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Hi, I think it would be really useful if you took a screenshot of all these questions and had them in a booklet and uploaded them in a drive so we could go through tricky maths questions then redo them ourselves too

mehtabsingh
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thanks so much - i could expand the parametric x terms - but thinking of the pythagorean identity i couldnt - thanks so much!!! - very helpful

stardreamix
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thank you for this video! pls do more :)

smartypants
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Can you do 2/3 tricky questions per video please

samsonambesajar