Evaluate tan^-1 (-1) (Is the answer -pi/4??)

asked Nov 8, 2019 66.6k views

1 vote

Evaluate tan^-1 (-1)

(Is the answer -pi/4??)

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7 votes

The answer is -.78

1. Plug numbers into calculator using second tan.
2. Take -45 and multiply it by pi/180
3. The result is -.78

Ouflak answered Nov 11, 2019

7.3k points

1 vote

The answer to is tan^-1(-1) is -45.
I don't know the answer with the pi.

Davis Peixoto answered Nov 15, 2019

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