AS Core Pure 2022 Pearson Edexcel Further maths 

Firstly, thanks for these great videos you put out. Secondly, I haven’t seen any textbook questions where trig comes up in series for AS, but that seems to be a recurring theme in the past papers. Should I do some extra dedicated practice for that? Where can I find questions like that? Thanks

i remember this paper the vectors was disgusting 😭

HI sir, Thank you for these videos. For questions like the one at 03:58 (Q3b) when I put the matrix into my calculator and multiply I get long decimals that are equivalent to the surds instead of the actual surds. I use the SD button and it doesn't change anything and my calculator is on the MathO setting. I have the 991EX. Do you know how I can fix it or should I just do questions like this manually? thank you.

For 1bi why was that your matrix and not the matrix C

at 2:19 is it always true if you take tan(...) you get the gradient of the half line? if not what is the "method" to work it out?