$\left| {\,\begin{array}{*{20}{c}}1&a&b\\{ - a}&1&c\\{ - b}&{ - c}&1\end{array}\,} \right| = $
$\left| {\,\begin{array}{*{20}{c}}1&a&b\\{ - a}&1&c\\{ - b}&{ - c}&1\end{array}\,} \right| = $
- A
$1 + {a^2} + {b^2} + {c^2}$
- B
$1 - {a^2} + {b^2} + {c^2}$
- C
$1 + {a^2} + {b^2} - {c^2}$
- D
$1 + {a^2} - {b^2} + {c^2}$
Similar Questions
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Find area of the triangle with vertices at the point given in each of the following: $(-2,-3),(3,2),(-1,-8)$
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