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.)

Question

tan−1(8)

Answer 1

If you really wanted expert help, you would have followed directions and posted your school subject in the appropriate box.

Answer 2

at wolframalpha.com, type in arctan(8)

Or, learn to use your calculator ...