How to Graph Rational Functions?
The rational function is defined as a polynomial coefficient whose denominator has a degree of at least 1. In other words, there must be a variable in the denominator. You can graph Rational Functions in a few simple steps. Join us to learn more about graphing Rational Functions.
The Law of Cosines
The Law of Cosines – Example 2: \(b=20, a=8, c=14\) \(cos B= \frac {14^2+8^2-20^2}{2(14)(8)} =\frac {196+ 64 – 400}{176}=\frac{-140}{224}=-0.625\) Since \(cosB\) is negative, \(B\) is an obtuse angle. \(B≅128.69 ^\circ \) Exercises for the Law of Cosines In the ABC triangle, find the side of c. 1. 2. 3. \(\color{blue}{31.12}\) \(\color{blue}{44.68}\) \(\color{blue}{21.49}\)
