The arctangent is the inverse tangent function. Since. tan Ï/4 = tan 45Âº = 1. The arctangent of 1 is equal to the inverse tangent function of 1, which is equal to Ï/4 radians or 45 degrees: arctan 1 = tan-1 1 = Ï/4 rad = 45Âº. 1  Arctan.  Arctan calculator.
Veins are blood vessels carrying blood towards the heart, whereas arteries bring blood away from heart. Mostly, arteries contain oxygenated blood, and veins contain carbon dâ¦ioxide-rich and oxygen-poor blood; however, there is one exception.
Generally most veins carry deoxygenated blood. Arteries carry oxygenated blood. The correct way to think about it is that Veins carry blood to the heart, whilst arteries carry blood away from the heart.This means in most cases, the blood carried by veins will be deoxygenated, whilst the blood carried by arteries is oxygenated.he correct way to think about it is that Veins carry blood to the heart, whilst arteries carry blood away from the heart. This means in most cases, the blood carried by veins will be deoxygenated, whilst the blood carried by arteries is oxygenated.