c3 trig

[Manasa]

hey ppl.. help me out wid this trig

prove:

arctanx+arctan(1/x)=pi/2

arcsinx+arccosx=pi/2

arctanx=pi/2-arccotx

thanks!

 

[urwahboy]

where did u find those qs?

 

[Ayesha B]

I feel unprepared already

 

[Ayesha B]

is this like a past paper question?

 

[urwahboy]

I feel unprepared already

these type of qs never came i hope they never come :/

 

[Ayesha B]

these type of qs never came i hope they never come :/

Mhm not generally, but I think you should check out number 8 on this question paper: http://www.edexcel.com/migrationdocuments/QP GCE Curriculum 2000/Maths/C3_Jan_2007_Paper.pdf



But yeah I've never seen these kind of questions... the only one i have seen is on that^ paper and its much easier...


Manasa, please do tell us where you got it from so we can have a look too

 

[Ayesha B]

Does it help to know that cosx = sin(90 - x) and that tanx = cot(90 - x) <-- actually I'm not sure about that one.

 

[Manasa]

ppl this is what my maths teacher gave me to practice when i said i needed more practice other than papers.. so i honestly dunno where he got those from but he did say theyre hard to do and good practice to prepare cuz we never know what edexcel might put up...
but i really dont think smth like this ll come up... atleast i hope not...

 

[Manasa]

this is what i found on googl... the solution...\
http://www.enotes.com/homework-help/prove-that-arctanx-arccotx-pi-2-194051

 

[Ayesha B]

ppl this is what my maths teacher gave me to practice when i said i needed more practice other than papers.. so i honestly dunno where he got those from but he did say theyre hard to do and good practice to prepare cuz we never know what edexcel might put up...
but i really dont think smth like this ll come up... atleast i hope not...

Mhmm.. I dont think it will! never seen anything like it beforee!

 

[urwahboy]

The qs and solution is on google so it wont come they always give unknown

 

[Manasa]

Mhmm.. I dont think it will! never seen anything like it beforee!

The qs and solution is on google so it wont come they always give unknown

umm feel preprd?

 

[urwahboy]

umm feel preprd?

i just started revising maths toaday so not prepared...

 

[Manasa]

i just started revising maths toaday so not prepared...

same here... i did c4 more

 

[Manasa]

i just started revising maths toaday so not prepared...

btw ial or gce?

 

[urwahboy]

same here... i did c4 more

i did neither of them becoz i was busy in phy and chem and now i cant understand anything ... :/

 

[urwahboy]

btw ial or gce?

Ial

 

[Ayesha B]

i just started revising maths toaday so not prepared...

Umm, I guess so in sha Allah it'll be good. I've been doing more C4 today too lol because that I hadnt done at all..

I'm doing GCE, wbu?

 

[urwahboy]

Umm, I guess so in sha Allah it'll be good. I've been doing more C4 today too lol because that I hadnt done at all..

I'm doing GCE, wbu?

I guess u replied me by mistake? u wanted to reply to Manasa

 

[Ayesha B]

I guess u replied me by mistake? u wanted to reply to Manasa

Lol yeah sorry... that was a reply to Manasa