Mathematics: Post your doubts here!

[Pals_1010]

If tan x = k, express in terms of k

(i) tan(pi - x)
(ii) tan (0.5pi - x)

 

[leadingguy]

suppose that x = 30
now tan (180 - 30 ) = tan 150 = -tan30 / tanx got it????

 

[Anamol shrestha]

help...w10_qp_12 question no. 7 (iii) urgent​

 

[Tkp]

If tan x = k, express in terms of k

(i) tan(pi - x)
(ii) tan (0.5pi - x)

i have also the same prblm here

 

[Anamol shrestha]

is ans of i) -tank.. and ans of... ii)tank

 

[Tkp]

is ans of i) -tank.. and ans of... ii)tank

-k and 2 is 1/k

 

[whitecorp]

-k and 2 is 1/k

Absolutely correct. Peace.

 

[Tkp]

Absolutely correct. Peace.

white copr can u explain the last tanx=k find sinx

 

[Anamol shrestha]

o my mistake...(i) -k since tan is negative in 2nd quad..and (ii) 1\k since tan(90-x)=cotx in my view

 

[Anamol shrestha]

help...w10_qp_12 question no. 7 (iii) urgent

 

[Anamol shrestha]

help...w10_qp_12 question no. 7 (iii) urgent

 

[whitecorp]

white copr can u explain the last tanx=k find sinx

Draw a right angled triangle, and label the opposite and adjacent sides as k and 1 respectively, such that the ratio of tan x is k/1=k
The length of the hypotenus is then given by sqrt (k^2 +1)
sin x is defined as opposite/hypotenus = k/ sqrt( k^2 +1) (shown)

Hope this helps. Peace.

 

[Tkp]

this

Draw a right angled triangle, and label the opposite and adjacent sides as k and 1 respectively, such that the ratio of tan x is k/1=k
The length of the hypotenus is then given by sqrt (k^2 +1)
sin x is defined as opposite/hypotenus = k/ sqrt( k^2 +1) (shown)

Hope this helps. Peace.

this 1 was so easy.damn

 

[deepum]

Hey..people..can anyone give all the difficult questions that could ever exist for p1....got my exams tomorrow..

 

[GorgeousEyes]

Nov08 no.5 i
Nov04 no.2 ii
Nov011 varient 13 no.6 ii
Jun09 no.10 iii
n0v08 no.10
Please Help me guys .

 

[hussamh10]

Hey..people..can anyone give all the difficult questions that could ever exist for p1....got my exams tomorrow..

do oct/nov 2010 varient 13 and if u score above 65 u are ready for tommorow...

 

[hussamh10]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_11.pdf how to make the graph
q7 3rd part

 

[Tkp]

Nov08 no.5 i
Nov04 no.2 ii
Nov011 varient 13 no.6 ii
Jun09 no.10 iii
n0v08 no.10
Please Help me guys .

nov 04-2ii)a is 25,d is 5.so apply the formula a+(n-1)d=30,find out the n.then apply the sum formula

 

[hussamh10]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w09_qp_11.pdf q2

 

[Tabi Sheikh]

Can any one tell me whether we are getting that formula sheet in P1 & P3 or not?