Notes
sine rule
Sine Rule
The sine rule is a relationship between the sides and angles of an arbitrary triangle. Given a triangle as follows:
StandardTriangle.png
the sine rule states that the following equations hold:
Equivalently,
It can be deduced from the sine formula for the area of a triangle. Starting from:
Multiply through by and divide by to get:
and the sine rule then follows by cancellation.
Created on April 12, 2021 15:30:34
by
Andrew Stacey