The Law of Sines
The Law of Sines
The Law of Sines is the relationship between sides and angles in any triangle.
Introduction
Let's prove the theorem.
(Hints)
MENU1...If a sinB = b sinA, you can make a triangle.
MENU2...If a triangle exists, always a sinB = b sinA.
MENU3...Let R be the radius of the circumscribed circle of triangle ABC, then 2RsinC = c.
Drag the red point