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Law of Sines: Basic Proof
In this video I go over the law of sines in its most common and basic form and prove it using the equation for the area of a triangle but by writing the area of a triangle in 3 different ways using the 3 different sides of the triangle as a base. The formula for the law of sines or sine law is: sinA/a = sinB/b = sinC/c. The more advanced version of the law of sines simply states that the law of sines also equals the diameter of the circumcircle of the triangle. The circumcircle is the circle that can be drawn that has all 3 points of the triangle touching the circle. I will go over this in a later video so stay tuned!
Download the notes in my video: http://1drv.ms/1MYMd49
View Video Notes on Steemit: https://steemit.com/mathematics/@mes/law-of-sines-basic-proof
Related Videos:
Proof that Sum of Angles in ANY Triangle = 180 degrees: http://youtu.be/4bI3BXIe2k8
Area of a Triangle - A simple proof that A = b*h/2: http://youtu.be/wUT_KN5pshQ
Area of a Triangle Proof - Part 2: When the base is NOT the longest side of the triangle: http://youtu.be/xTVP-HHBP0U
Trigonometry: Proof of Law of Cosines (and Pythagorean Theorem): http://youtu.be/wOCYb3Ku6yw .
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Category | Education |
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