4'4 Area of a Triangle

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4.4 Area of a Triangle
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Theorem
The area A of a triangle is
where b is the base and h is the altitude drawn
to that base.
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Theorem
The area A of a triangle equals one-half the
product of two of its sides times the sine of its
included angle.
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Theorem Herons Formula
The area A of a triangle with sides a, b, and c is
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Find the area of a triangle whose sides are 5, 8,
and 11.
Let a 5, b 8, c 11.