Problem 3.1: Which trigonometric function is equivalent to this expression: sin(

- x)? [Solution]

Problem 3.2: What are the amplitude and period of y = - 3 sin(2x + 1)? [Solution]

Problem 3.3: What are the amplitude and period of y =

cos(

x)? [Solution]

Problem 3.4: Which of the trigonometric functions are even, which are odd, and which are neither? [Solution]

Problem 3.5: What are the period and amplitude of the function below? [Solution]