Use a calculator to find an approximate value (in radians) of the expression rounded to five decimal places, if it is defined. (If an answer is undefined, enter UNDEFINED.)

tan−1(8)

at wolframalpha.com, type in arctan(8)

Or, learn to use your calculator ...

To find the approximate value of arctan(8) in radians, you can use a calculator. Here are the steps:

1. Press the "ON" button on the calculator to turn it on.
2. Enter the value 8.
3. Press the "tan^-1" or "arctan" button on the calculator.
4. The display should show the approximate value in radians.

Using a calculator, the approximate value of arctan(8) is approximately 1.44644 radians (rounded to five decimal places).

To find the approximate value of the expression tan^(-1)(8) in radians, you can use a scientific calculator or an online calculator that supports trigonometric functions. Here's how you can do it:

1. Press the "tan^(-1)" or "arctan" button on your calculator.
2. Enter the value 8.
3. Press the "=" or "Enter" button to calculate the inverse tangent of 8.
4. The calculator will display the approximate value in radians.

Using a calculator, the approximate value of tan^(-1)(8) is approximately 1.44644 radians.

It's worth noting that the arctan function is limited to a specific range of values. If the input value exceeds that range, the calculator may return an error or an undefined result. In this case, however, the result is defined and can be calculated.

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