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# Derivation of the Triangle Area Formula

## Derive and apply area equals half the product of two sides and the sine of the included angle.

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## Derivation of the Triangle Area Formula

by CK-12 //at grade
Determine an alternate formula for a triangle's area
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## Area of a Triangle

by CK-12 //at grade
This lesson covers how to find the area of a triangle using sine.
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## Area of a Triangle

by CK-12 //at grade
This lesson covers how to find the area of a triangle using sine.
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• Video

## Example: Determine the Area of a Triangle Using the Sine Function

by CK-12 //at grade
Shows an example of determining the area of a triangle by using the sine function.
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