Question about Texas Instruments TI-89 Calculator
I dont understand whats wrong with my function buttons. When I type in for example sin(4) and press enter, it shows the same thing "sin(4)", the same for cos and tan!!! im going crazy here!!!!!!!!!!!!!!
The answer that you have received in actuality is correct. However, it is in exact form when the answer that you were looking for was an approximation (decimal form) answer. To achieve this all you have to do is hit the alpha button (the yellow button with a diamond in the center) and then enter which will give you your desired answer :-)
Posted on Jan 15, 2008
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Posted on Jan 02, 2017
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