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Dafna1 [17]
3 years ago
5

Use calculus to find the area a of the triangle with the given vertices. (0, 0), (6, 2), (4, 8)

Mathematics
1 answer:
Vilka [71]3 years ago
7 0

The area of the triangle with vertices  (x_1,y_1),(x_2,y_2),(x_3,y_3) is

\frac{1}{2}\left|\begin{array}{ccc}1&x_1&y_1\\1&x_2&y_2\\1&x_3&y_3\end{array}\right|.

Inserting numerical values, the are of the triangle with vertices (0, 0), (6, 2), (4, 8) is

\Delta = \frac{1}{2}\left|\begin{array}{ccc}1&0&0\\1&6&2\\1&4&8\end{array}\right |\\
\Delta = 0.5(48-8)\\
\Delta = 20 \;square\; units


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