What is the Formula for the Area of a Triangle Using Sines?

Watch this video to discover how trigonometry can give you another way to find area of triangle. By starting with the standard formula for the area of the triangle and the right triangle trigonometric ratio for sine, the instructor derives a formula for the area of triangle using the sine function. She then rewrites that formula using all the different angles of the triangle.

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8th - 11th
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