Respuesta :
cot 675 = cot (675 - 360) = cot 315 degrees
this angle is in the 4th quadrant where tan and cot are negative
cot 315 = 1 / tan 315 = - 1/ tan 45 = = -1
this angle is in the 4th quadrant where tan and cot are negative
cot 315 = 1 / tan 315 = - 1/ tan 45 = = -1