Calculators How Can I Change Integration Form on Ti-89?

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The Ti-89 calculator is producing an unexpected result when integrating the function 1/(sinx), returning "ln[(sinx)/(cosx-1)]" instead of the desired "ln[tan(x/2)]." Users experiencing similar issues should ensure their calculator is set to the correct mode, particularly checking that the angle is in radians. If the problem persists, it is recommended to verify the calculator's operating system version, with the latest being 2.09, and consider upgrading if necessary.
Machinus
I am having some problems with my Ti-89.

I am familiar with all the settings under "Mode."

However, when integrating the function 1/(sinx) the calculator returns the form "ln[(sinx)/(cosx-1)]" and NOT the form "ln[tan(x/2)]." I am completely unable to get the calculator to return the other form of the integral. I have even used other Ti-89s and they return the second form and I cannot see any difference in the settings. Can anyone help?
 
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Are you sure your calculator has a complex format of rectangular? Also the angle should be in radians. If that doesn't work I suggest upgrading the OS on the calc. The lastest version is 2.09. You can check which version you have by going to Tools->About
 

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