Understanding f(x)

On page 35 of Gerald and Wheatley, the bisection method for the function f(x) = 3x + sin(x) - exp(x) = 0. I think i'm a little bit confused as to how f(x3) results into .0.033070 at the first iteration on Table 1-1. I thought f(x3) = 3x + sin(x) -exp(x) would be solved like this: 3 * 0.5 + sin(0.5) - exp(0.5)
= 1.5 + 0.0087265 - 1.64872
= - 0.139994. Instead what was written was 0.33070.
Is there something I'm doing wrong?
Pls assist.

Pls dont our lecturers respond to emails any longer. I have a concern posted above and yet the due date is fast approachinga nd the concepts are yet to be simmered down. Can some body pls help

you need to switch your calculator from degrees to radians...

Cavan, thanks alot. I'm grateful