Census Bureau Reports 64 Percent Increase in Number of Children Living with a Grandparent Over Last Two Decades. In 2009, 7.8 million children lived with at least one grandparent, a 64 percent increase since 1991 when 4.7 million children lived with a grandparent, according to a new report from the U.S. Census Bureau.
Epsilon (uppercase Îµ, lowercase Îµ or lunate Ïµ; Greek: Î­ÏÎ¹Î»Î¿Î½) is the fifth letter of the Greek alphabet, corresponding phonetically to a mid front unrounded vowel /e/. In the system of Greek numerals it has the value five. It was derived from the Phoenician letter He .
Theta is most often used to represent unknown angles, especially in the study of trigonometry. Theta represents an angle in degrees, but not in radians. Theta (Î¸) is a Greek letter, typically denoting an unknown angle. Depending on the context of the problem, it could be in degrees or radians.