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.
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!