Inez is cutting a piece of glass to make a stained glass window. She has a device that will let her cut angles precisely She knows the measurements in the diagram to the right. What angle must she cut between the 3.2cm side and the 3.6cm side?

no idea, since no diagram. But if these sides are the legs of a right triangle, you might want

tanθ = 3.2/3.6 = 8/9