Question
In Problems 27–38, use a calculator to find the value of each expression rounded to two decimal places.$$\tan ^{-1}(-3)$$
Step 1
The default mode is usually degrees, but for this calculation, we need to be in radians. To change the mode, press the 'Shift' button, then the 'Mode' button. A list will appear on your calculator screen. Number 4 corresponds to the Radian mode. Select number 4. Show more…
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