Common Core: HSG-SRT.D.9
Example, solutions, 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.
Area of a Triangle Using Sine
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.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.