Use your calculator to evaluate the integral from 0 to 0.5 of the tangent of x, dx. Give 3 decimal places for your answer. If your answer is below 1, use a leading zero—for example, 0.252.

Question

Use your calculator to evaluate . Give 3 decimal places for your answer. If your answer is below 1, use a leading zero—for example, 0.252.

Answer 1

If you have a TI-84:

Because this is a trig function, first set your calculator to radian mode by pushing the "mode" button (just right of the blue "2nd" button). Scroll to the third line down and select "RADIAN" and hit "enter" then "quit".

Use the "math" button (right below the green "alpha" button). Scroll down to number 9 "fnInt(".

Type in "0" as the lower integration bound and 0.5 as the upper integration bound (use the cursor buttons to scroll to the correct places). Then INSIDE THE EXISTING PARENTHESIS, hit the "tan" button, then type "x" (the variable button just right of the green alpha button) then the close parenthesis button, then type "x" after the "d". It should look like this when you are done:

Hit "enter" and the answer will be 0.1305842404

So your answer would be 0.131