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The distance from Chicago to St. Louis is440 kilometers, from St. Louis to Atlanta795
Chapter 10, Problem 24(choose chapter or problem)
QUESTION:
The distance from Chicago to St. Louis is 440 kilometers, from St. Louis to Atlanta 795 kilometers, and from Atlanta to Chicago 950 kilometers. What are the angles in the triangle with these three cities as vertices?
Questions & Answers
QUESTION:
The distance from Chicago to St. Louis is 440 kilometers, from St. Louis to Atlanta 795 kilometers, and from Atlanta to Chicago 950 kilometers. What are the angles in the triangle with these three cities as vertices?
ANSWER:Step 1 of 5
Law of Cosine: It defined the relation between the lengths and angles of the triangle. The formula of Cosine rule is:
\(\cos A = \frac{{{b^2} + {c^2} - {a^2}}}{{2bc}}\)