Friendship

CK's A Math Paper 1 Answer
1) x= -3.2 , y= -0.8

2)x=63.4,90,234.4,270 (All in deg mode)

3ii) cosx=q-qsinx (Not sure for this)

4)-0.0708 or 1/2(3-pie) (Both answer is the same so you just have to write one)

5)0< k <4

6)Proving~

7)x= -0.5 or x= 5.5

8i)Fifth term= nC4 ... (Answer too long and lots of ways to show)
n= 8
ii) a=3 , b=4

9i) a=5 , b=4
ii) x= -4,1,0.5

10i)Centre=(-2,-5) Radius = 4
ii) x^2 - 4y^2 -2x + 24y -35 (This is definetely wrong i think)

11i) -16/(x-2)^2
ii) -4
iii) 0.12unit/sec

12i) acc= -7
ii) 4 and 1/12
iii) OA=2m (Not sure)
iv)28m

13i) h= (2880 - square root 3 times l^3) / 6 l^2
ii) Proving
iii) 8.04
iv) 281,minimum

And thats all =]

AND Congrats Tan Hong Hui for getting History top~