• While working on a problem in math class, you get a solution with a certain equation. In this case, your solution isr = 3+2cos() . Your friend comes over and tells you that he thinks he has solved the problem. However, when he shows you his paper, his equation looks different from yours. His solution isr = 3+2cos() . Is there a way you can determine if the two equations are equivalent? If the two equations are equivalent what affects do -3 and have?