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.
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.