Mathematica 9 is now available
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Student Support Forum > General > > "Trigonometry input question"

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Original Message (ID '277602') By Sint:
Thank you very much for your help. I was hoping that mathematica software would be a good replacement for my hand held calculator but the solution of this simple equasion is almost ridiculous. Do you maybe know of any other mathematical software which is easyer to use and has good sphere trigonometry support?