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 hollow tube that carries blood from the heart to all the different regions of the body. What is the difference between an artery and a vein? The arteries take blood away from your heart to all the different organs in your body, including your brain, kidneys and liver.Arteries also take blood from the heart to all your limbs.he arteries take blood away from your heart to all the different organs in your body, including your brain, kidneys and liver. Arteries also take blood from the heart to all your limbs.