Let (x) = sin x. Using a calculator, we find Use these values and the fact that f is increasing on to justify the statement

Let ƒ(x) = sin x. Using a calculator, we find

Use these values and the fact that f is increasing on to justify the statement

Then draw a figure like Figure 3 to illustrate this statement.

(7 -0.1) 0 f 4 () 0.633, f 0.707, f (+0.1) = 0.774