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how to do Tan-1

 Jan 26, 2019
 #1
avatar+104402 
+1

inverse tan is the same as arctan.   Use atan    laugh

 Jan 26, 2019
 #2
avatar+283 
+2

Another quick way is if you have a calculator/are allowed one, you can see which tan^(-1) corresponds to. For example, mine is yellow and above the "tan" function and so is my shift button. So if I click shift and then the tan button, I can input my value and it will be automatically calculated when I press "=." 

 Jan 26, 2019

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