2008-II-22
Ans: C
Consider $\Delta ABD$.
… Read Consider $\Delta ABD$.
$\begin{array}{rcl}
\tan 30
HKCEE
2008-II-23
Ans: A
$\begin{array}{rcl}
\dfrac{\cos A}{\tan (90^\cir
… Read $\begin{array}{rcl}
\dfrac{\cos A}{\tan (90^\cir
2008-II-24
Ans: A
… Read Note that
$\begin{array}{rcl}
AC^2 + BC^2 & = &#
2008-II-25
Ans: A
A is the image formed by rotating the figure anticlock
… Read A is the image formed by rotating the figure anticlock
2008-II-26
Ans: D
I has reflectional symmetry and rotational symmetry
… Read I has reflectional symmetry and rotational symmetry
2008-II-27
Ans: B
… Read Let $\angle ADC = y$. Add a point $E$ on $AB$ such that $E
2008-II-28
Ans: D
… Read Add a horizontal line and the line divides $b$ into $b_
2008-II-29
Ans: B
Since the coordinates of the mid-point of $AB$ are $(1
… Read Since the coordinates of the mid-point of $AB$ are $(1
2008-II-30
Ans: C
… Read According to the above figure, we have
$\begin{array
2008-II-31
Ans: D
Note that the slope of $L_1$
… Read Note that the slope of $L_1$
$\begin{array}{cl}
= �
2008-II-32
Ans: D
According to the figure, $m_2 < m_1 < m_4 < m_3$.
… Read According to the figure, $m_2 < m_1 < m_4 < m_3$.
2008-II-33
Ans: B
Note that the prime numbers between $40$ and $49$ are $
… Read Note that the prime numbers between $40$ and $49$ are $
2008-II-34
Ans: D
I must be true. The range of $A$
… Read I must be true. The range of $A$
$\begin{array}{cl}
= &
2008-II-35
Ans: A
First, we divides the region under the frequency curv
… Read First, we divides the region under the frequency curv
2008-II-36
Ans: A
The diagram of A shows the relation that $y$ increases
… Read The diagram of A shows the relation that $y$ increases
2008-II-37
Ans: D
Note that $y=f(x) + 2$ represents translating $y=f(x
… Read Note that $y=f(x) + 2$ represents translating $y=f(x
2008-II-38
Ans: C
Without loss of generality, suppose $a=2$, $b=4$ and
… Read Without loss of generality, suppose $a=2$, $b=4$ and
2008-II-39
Ans: A
$\begin{array}{cl}
& \sqrt{49a} – \sqr
… Read $\begin{array}{cl}
& \sqrt{49a} – \sqr
2008-II-40
Ans: A
$\begin{array}{cl}
& 11~000~011~000~111_2 \
… Read $\begin{array}{cl}
& 11~000~011~000~111_2 \
2008-II-41
Ans: B
Let $x$ and $y$ be the two numbers with $xy$. Hence, we h
… Read Let $x$ and $y$ be the two numbers with $xy$. Hence, we h