2008-II-42
Ans: B
Let $f(x,y)=2x-3y+180$. For the coordinates of poin
… Read Let $f(x,y)=2x-3y+180$. For the coordinates of poin
HKCEE
2008-II-43
Ans: B
I must be an arithmetic sequence.
… Read I must be an arithmetic sequence.
$\begin{array}{rc
2008-II-44
Ans: B
Since $a-6$, $a$ and $a+5$ form a geometric sequence,
… Read Since $a-6$, $a$ and $a+5$ form a geometric sequence,
2008-II-45
Ans: B
Let $y = \sin \theta$. Then the equation becomes
… Read Let $y = \sin \theta$. Then the equation becomes
$\beg
2008-II-46
Ans: B
Note that $y=a\cos(2x^\circ + 120^\circ)+b$ means c
… Read Note that $y=a\cos(2x^\circ + 120^\circ)+b$ means c
2008-II-47
Ans: B
For $0^\circ \le \theta \le 360^\circ$, we have
… Read For $0^\circ \le \theta \le 360^\circ$, we have
$\beg
2008-II-48
Ans: D
… Read Add a point $E$ on $AB$ such that $AC//ED$. Then $AEDC$
2008-II-49
Ans: D
Note that $CF=DE$. Therefore, the angle of inclinati
… Read Note that $CF=DE$. Therefore, the angle of inclinati
2008-II-50
Ans: A
… Read Join $AB$. Since $A$, $B$, $C$ and $D$ are four points o
2008-II-51
Ans: B
Since $AB$ is the tangent to the circle at $B$, then we h
… Read Since $AB$ is the tangent to the circle at $B$, then we h
2008-II-52
Ans: D
… Read Note that $x=24$ is a vertical line passes through poi
2008-II-53
Ans: D
I is true. The centre of the circle
… Read I is true. The centre of the circle
$\begin{array}{cl
2008-II-54
Ans: A
I is false. The number of cars sold for Brand $B$ is $40$
… Read I is false. The number of cars sold for Brand $B$ is $40$