+5478 Assuming you mean tan-1 (arctan), just click "2nd" in the top right corner of the calculator. Then click the key where "tan" was, and it will have changed to arctan.
Below is this sites calculator:
http://web2.0calc.com/
It will show up as atan( . Then enter your number, end the parentheses, and click the equal sign/press enter to solve:)
+5478 Assuming you mean tan-1 (arctan), just click "2nd" in the top right corner of the calculator. Then click the key where "tan" was, and it will have changed to arctan.
Below is this sites calculator:
http://web2.0calc.com/
It will show up as atan( . Then enter your number, end the parentheses, and click the equal sign/press enter to solve:)
