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It depends on your use. If you have double doors, horizontal is a great option if you only want to open one side and leave the other side closed.
No.
No.
The principal range of arc tan is an angle in the open interval (-pi/2, pi/2) radians = (-90, 90) degrees.
Someone whom would sit in a confined area and open and close the door when a cart of coal came, this would cause ventilation in the mines.
with the eyes closed
eyes open :)
They remain eyes once they open!!
open
open
they are closed.
Closed.
closed
No ,they sleep with their eyes open
not all babys are born with their eyes open ,my mom said i was born with my eyes closed and they did not open for 3 days.
Not all turtles sleep with their eyes closed. My yellow slider sleeps with its eyes closed but my Map turtle sleeps with them open so it depends on the turtle.
Closed. Open means it does not equal to...