Was doing cosine law with an sss triangle. I keep getting error on my ti-84 but it works fine on an online calculator. What is causing this? Thanks. : r/trigonometry

Use Sin, Cos, Tan Buttons on TI-84 Plus CE

Using the Law of Cosines in the SSS case (& Introduction to the

Using the Law of Cosines with SSS (to find an angle)

Trigonometry [10th, 10th ed.] 9781337278461

full: CSOUND

This is a program for the TI-83 Plus and TI-84 Plus. In order to use it, you must have one of these calculators, a cable to connect it to your

Solve triangles - Law of Sines / Cosines - TI-84 Plus Program

Trigonometry: A Unit Circle Approach [10 ed.] 0321978609

Triangle Solver TI-84 Program - Math Class Calculator

PDF) Connecting undergraduate programs to high school students

34. [Sine and Cosine Functions], Pre Calculus