1. The problem statement, all variables and given/known data Integrate the definite integral ∫sin(x)dx given b = ∏ and a = 0. 2. Relevant equations Fundamental theorem of calculus; definite integral = F(b) - F(a) 3. The attempt at a solution The anti-derivative is -cos(x). F(∏) = -(-1) = 1. F(0) = 1. F(b) - F(a) = 0. Why does the book say the answer is 2 then?