Question
In Problems 27–38, use a calculator to find the value of each expression rounded to two decimal places.$$\tan ^{-1}(-0.4)$$
Step 1
In this case, we need to be in radian mode. This can be done by pressing the 'shift' button, then 'mode', and then selecting the option for radians, which is typically represented by a '4' or an 'R' on the screen. Show more…
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