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.
An artery is a blood vessel as well as a vein. Explanation: The difference between an artery and a vein is that an artery takes blood (usually in hight O2, except pulmonary artery that goes to the lungs) away from the heart and a vein brings blood (low O2, except pulmonary vein that comes from the lungs) from the body to the heart. Was this helpful? Let the contributor know!