Chapter 7 - Section 7.5 - Conditional Probability and Independence - Exercises - Page 507: 30

Independent

Here, both $A$ and $B$ are independent events because the result of tossing the coin at the first instant does not affect the result of the second toss. This means that both $A$ and $B$ are not mutually exclusive because it can be possible that both the first and the second toss yields heads .