If \( \triangle A B C \) is not a right triangle, then value of \[ \Delta=\left|\begin{array}{cc...

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If \( \triangle A B C \) is not a right triangle, then value of
\[
\Delta=\left|\begin{array}{ccc}
\tan A & 1 & 1 \\
1 & \tan B & 1 \\
1 & 1 & \tan C
\end{array}\right|
\]
is
(a) \( -1 \)
(b) 2
(c) 3
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