2019-II-21
Ans: B
In $\Delta OBD$ and $\Delta OAC$,
… Read In $\Delta OBD$ and $\Delta OAC$,
$\begin{array}{rc
HKDSE-MATH - 2019 - Paper 2
2019-II-22
Ans: B
Since $ABCD$ is a rectangle, then $AB = CD$ (property o
… Read Since $ABCD$ is a rectangle, then $AB = CD$ (property o
2019-II-23
Ans: A
I is true. According to the graph, we have
… Read I is true. According to the graph, we have
$\begin{arr
2019-II-24
Ans: A
For the straight lines are perpendicular to each othe
… Read For the straight lines are perpendicular to each othe
2019-II-25
Ans: D
Since $A$ is translated to the right by $9$ units to $B$
… Read Since $A$ is translated to the right by $9$ units to $B$
2019-II-26
Ans: D
Since $P$ is a moving point such that the perpendicula
… Read Since $P$ is a moving point such that the perpendicula
2019-II-27
Ans: B
I is not true. Rewrite the equation of $C$ to general fo
… Read I is not true. Rewrite the equation of $C$ to general fo
2019-II-28
Ans: C
Consider the sample space.
… Read Consider the sample space.
$\begin{array}{|c|c|c|
2019-II-29
Ans: B
… Read I can be obtained. Since we can read the largest and the
2019-II-30
Ans: C
A is not true. The mode of the distribution is the datum
… Read A is not true. The mode of the distribution is the datum
2019-II-31
Ans: B
By using the intercept form, we have
… Read By using the intercept form, we have
$\begin{array}{
2019-II-32
Ans: D
Let $y = \log x$.
… Read Let $y = \log x$.
$\begin{array}{rcl}
\dfrac{3}{3y &
2019-II-33
Ans: A
$\begin{array}{cl}
& 100\ 110\ 000\ 010\ 110_2
… Read $\begin{array}{cl}
& 100\ 110\ 000\ 010\ 110_2
2019-II-34
Ans: D
$\begin{array}{cl}
& \dfrac{4 +i^5}{a + i}
… Read $\begin{array}{cl}
& \dfrac{4 +i^5}{a + i}
2019-II-35
Ans: C
$\left\{ \begin{array}{ll}
x + 2y = 20 & \ldots \
… Read $\left\{ \begin{array}{ll}
x + 2y = 20 & \ldots \
2019-II-36
Ans: C
Let $a$ and $r$ be the first term and the common ratio of
… Read Let $a$ and $r$ be the first term and the common ratio of
2019-II-37
Ans: A
$\left\{ \begin{array}{ll}
3x – y – 2 =0
… Read $\left\{ \begin{array}{ll}
3x – y – 2 =0
2019-II-38
Ans: A
In $\Delta ACO$,
… Read In $\Delta ACO$,
$\begin{array}{rcll}
OA & = &#
2019-II-39
Ans: B
Consider cyclic quadrilateral $ACDE$.
… Read Consider cyclic quadrilateral $ACDE$.
$\begin{arr
2019-II-40
Ans: C
In $\Delta PQR$,
… Read In $\Delta PQR$,
$\begin{array}{rcl}
\tan \angle PR