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Unformatted text preview: Section 7.4
Area of a Triangle Area of a Triangle a c H b We know that A = bh. Since h = a sin sin We have that A = ba sin. Area Formulas
By a similar argument we are able to get 1. A = ab sin 2. A = bc sin 3. A = ac sin The area A of a triangle equals one-half the product of two of its sides times the sine of their included angle. Heron's Formula
The area A of a triangle with sides a,b, and c is A = [s(s-a)(s-b)(s-c)] Where s = (a + b + c). ...
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