ISC 12th − Q & A

Sorry for posting the question here. But anyone willing to do this can try...

find the limit as x ->0 for
(1+sinx-cosx+log(1-x))/(x tan^2 x)

https://www.respaper.com/rockstardas/2494-pdf.html Q10. Please, the method will be appreciated. =)

is the proof of sine or cosine rule using vectors important? on a side note, what are the important stuff you need to study from there? will geometry sums come?

https://www.respaper.com/rockstardas/7568-pdf.html Maths prelim paper: pages are disordered for some reason :/ sorry and quality is shit

1. Show that the height of a cylinder of maximum volume that can be inscribed in a cone of height h is h/3.

Help please. :)

This respaper : https://www.respaper.com/7866sameer/1798-pdf.html

Question 15(a)(the one with representing vector with 2 other vectors) from Sec B, someone haaaaaalp; :3

Guys plz upload sec B as well, vinay (boi u 2) didn't in both his 2 papers :3 

I haven't touched sec C ever. :3 plz bruhs and siss

Doubt from sec C 
We are provided with a value for x and we have to find for y . Then in which equation do we have to substitute value of x ?  x on y or y on x?

Maths respaper : 
https://www.respaper.com/vinayarunkumar/9745-pdf.html

CoCl3.6NH3 question did anyone get the answer... I couldnt even understand the question properly...

IM attaching a question in comments section. please verify the solution. I think its wrong because they cut 0 from denominator and numerator

Is it okay if i first write Section B and then move to Section A

in calculating area using definite integration.. if the graph goes below X axis should we take modulus?

any idea on how to start with maths prep.. IS oswals book good?

https://www.respaper.com/surya30/8036-pdf.html

my prelim paper::https://www.respaper.com/mmks1234/9778-pdf.html