Problem 2.1: What is arccos(

)? [Solution]

Problem 2.2: What is arcsin(0) [Solution]

Problem 2.3: What is arccos(

)? [Solution]

Problem 2.4: Why aren't the inverse relations functions? [Solution]

Problem 2.5: What are the domains of arcsine, arccosine, and arctangent? [Solution]