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.
1 The difference is that an artery brings blood to the body and a vein takes blood to the lungs.  Arteries and Veins are part of the circulatory system, where arteries carry the blood from the heart to the organs, and the veins carry it from the organs to the heart again.
Actually, arteries carry oxygen-rich blood to the body, whereas veins carry oxygen-poor blood back to the heart. The only exception to this rule is the Pulmonary Artery, which carries oxygen-poor blood to the lungs.It is called an artery because it carries blood from the heart instead of towards it.he blood in the pulmonary artery is oxygen-poor. yes all the arteries carry oxygenated blood except pulmonary artery which carry de â¦ oxigenated blood from the right ventricle of the heart towards the lungs.. I don't know what arties are, but arteries carry oxygen-rich blood while veins carry CO2 rich blood. Answered.