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## Homework Statement

Evaluate the definate integral of the following

[tex]\int[/tex] (from 1 to 2) [tex]\frac{sin t}{t}[/tex] dt

## The Attempt at a Solution

I am actually stuch from the very beginning.

I tried to set u=sin(t) but this doesn't help much because (sint)'=cost and

this is going to make the problem more complicated.

I also set u=1/t but the derivative of 1/t has nothing to do with

the function as well.

(Perhaps I shouldn't integrate the function by substitution)

Please help me with the start!