Videos and lessons to help High School students learn how to
derive the formula *A* = 1/2 *ab* sin(c)
for the area of a triangle by drawing an auxiliary line from a
vertex perpendicular to the opposite side.

Common Core: HSG-SRT.D.9

Related Topics:

Common
Core (Geometry)

Common Core
for Mathematics

Derivation and practice of a new area formula for triangles using the sine function.

The Area of a Triangle using Sine

This video explains how to derive the formula and how to determine the area of a triangle using the sine function.

SAS Triangle Area Formula

Derivation and application of sas triangle area formula.

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

This video provides an example of how to determine the area of a triangle using the sine function.

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