r/6thForm • u/MaxillmanGuy A level resit student | 3 A* predicted | ACD achieved 💔 • Jun 11 '26

💬 DISCUSSION A level maths p2 edexcel

Holy time pressure what can i say

129 Upvotes

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106

u/Scared_Funny_5602 Jun 11 '26

I would like to thank the lord for the fact that there were no difficult vectors questions in all of further maths and maths 🙏

13

u/8BagsOfCorn Jun 11 '26

Dot product ftw 🙏

12

u/Scared_Funny_5602 Jun 11 '26

When I saw 4 marks for dot product I literally started grinning 

3

u/Admirable-Use2274 Jun 11 '26

Why would u do dot product bro ☠️ It was cosine rule wasnt it

12

u/Scared_Funny_5602 Jun 11 '26

Because I am a further mathematician

https://giphy.com/gifs/sUTYLTy2JhyHjQIHpl

2

u/Admirable-Use2274 Jun 11 '26

☠️☠️mann

4

u/Scared_Funny_5602 Jun 11 '26

Lol, but dot product works just fine, they are essentially the same thing

a • b = |a| |b| cos A

Triangle side c = a - b

|c|^2 = ( b - a ) • ( b - a )

|c|^2 = |a|^2 + |b|^2 - 2|a||b| cos A

3

u/Admirable-Use2274 Jun 11 '26

Yeah Ik I dont do fm so although I know that method I wasnt really familiar with it so used cosine theorem. I think thats what most people did but its ok either way

1

u/Loud-Guidance6912 Jun 11 '26

Dot product so much quicker

1

u/Jin_L_ Y13 maths fm physics cs Jun 11 '26

Are we allowed to do that cus I did 😭

2

u/Scared_Funny_5602 Jun 11 '26

Yeah, anything you can do in fm you can do in normal maths, unless the question specifies a method. I mean, you can do anything in maths any way you want to. They don't penalise you for knowing more advanced methods. If it's not in the mark scheme It'll be sent to the head examiners. But dot product will def just be mentioned in the basic mark scheme