Respuesta :

  suppose 
y=cot^-1(1) 
cot(y)=1 
1/tan(y)=1 
tan(y)=1 
y = π/4 radians
=cot^-1(1)= π/4 
y= 5π/4 radians
cot^-1(1)= 5π/4

Answer:

A

Step-by-step explanation: