HKDSE-MATH - 2012 - Paper 2 -

Ans: D
Let $\theta$ be the acute angle between $PO$ and the ne

Ans: (a) $L$ is the angle bisector of $\angle AOB$. (b) $(13,

Ans: A
Note that the perpendicular bisector of $OA$ is $y=6$

Ans: (a) $P’=(5,3)$, $Q’=(-19,-7)$

1. $P'(5,3

Ans: B
Note that the rectangular coordinates of the image $P

Ans: C

Let $A’$ be the image. Then the rectangular coo

Ans: A

Let $R(h,k)$ be the orthocentre of $\Delta OPQ$. Note

Ans: (a) $60^\circ$ (b) $36$ (c) $3$

1. $\begin{array}{cl}
   &#

Ans: (a) $A’=(-4-3)$, $B’=(9,9)$

1. $A’

Ans: C
Plot the points $P$, $Q$ and $R$ on the same polar coord

Ans: A

$\begin{array}{rcl}
\angle COE & = & 307^

Ans: A
Since $a 0 $, then sketch the below graph according to t

Ans: D
Since $A$ is translated to the right by $9$ units to $B$

Ans: D
Since the coordinates of the reflection image of $Q$ w

Ans: (a) $60^\circ$ (b) $21$ (c) $63$

1. $\begin{array}{cl}
   &

Ans: B

$P(7,-5)$ is reflected with respect to the $y$-axis t