2011-II-41
Ans: A
$\begin{array}{cl}
& 1~000~010~000~101_2 \\
… Read $\begin{array}{cl}
& 1~000~010~000~101_2 \\
Note that the coordinates of
$\begin{array}{r
$\begin{array}{rcl}
\angle FA
Since $DA$ is the tangent to the circle at $A
$\begin{array}{rcl}
\tan y &
$\begin{array}{cl}
=