Qualification > Math
[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !
I Jimmy I:
Ahaaaa!
Why thank u very much sir :D
physichemaths:
june 2011 paper 11 question 5 part ii? :(
urgent. anyone please help me?
bulono:
question 4i...help....
http://www.xtremepapers.me/CIE/International%20A%20And%20AS%20Level/9709%20-%20Mathematics/9709_w10_ms_11.pdf
Vin:
--- Quote from: physichemaths on May 06, 2011, 02:46:30 pm ---june 2011 paper 11 question 5 part ii? :(
urgent. anyone please help me?
--- End quote ---
June 2011. :/ Right. :/
--- Quote from: bulono on May 06, 2011, 03:37:56 pm ---question 4i...help....
http://www.xtremepapers.me/CIE/International%20A%20And%20AS%20Level/9709%20-%20Mathematics/9709_w10_ms_11.pdf
--- End quote ---
Question paper would help better my friend.
Anywho,
LHS
Multiply numerator and denominator by 1 + cos x
Solve it carefully.
You should reach the stage where you get :
sin x tan x + sin x tan x cos x
-----------------------------
sin^2 x
separate to give two fractions and cancel out the sine
you'll get:
tan x tan x cos x
----- + ------------
sin x sin x
1/ cos x + (equate tan x = sin x / cos x) and cancel out everything to get 1
Et Voila!
One tip. Write tan x = sin x / cos x at the top of the page ALWAYS while solving identities. Helps ;)
Good Luck for Monday.
iluvme:
CIE November 2010 Variant 2
Q7 iii)
I got the answer using a very very long method, does anyone have a shorter method since its 1 mark only?
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