Vanishing of Quasi-Coherent Sheaf Cohomology of Affine Scheme

Theorem
Let $X = \Spec A$ be the spectrum of a commutative ring $A$.

Let $\FF$ be a quasi-coherent sheaf on $X$.

Then for all $i \in \Z$ with $i > 0$ the $i$-th sheaf cohomology $\map {H^i} {X, \FF} = 0$.