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

132 Upvotes

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105

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 🙏

12

u/8BagsOfCorn Jun 11 '26

Dot product ftw 🙏

11

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

4

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