Law of Cosines - Practical Applications

General discussions of measurement techniques and the results of testing of techniques and equipment.

Moderators: edfrank, dbhguru

Post Reply
User avatar
Matt Markworth
Posts: 1302
Joined: Fri Nov 23, 2012 8:41 pm

Law of Cosines - Practical Applications

Post by Matt Markworth » Sun Jan 24, 2016 9:49 am


As a spin-off of the "Trigonometry Game" thread, I have started this new thread to discuss practical applications of the Law of Cosines. My first thought is that it is nice to have a formula that doesn't require a right triangle.
dbhguru wrote:
Here is a problem that calls for solving for the angles of a triangle when the lengths of the sides are known. As a hint, think law of cosines.
Trig Problme %232.png
Trig Problme %232.png (28.59 KiB) Viewed 813 times
There are practical applications that call for determining an angle of a plane triangle when the sides are known. Let's first see the solution. ... 480#p36068
Law of Cosines formulas:
law of cosines (2).jpg

Post Reply

Return to “Measurement and Dendromorphometry”