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