The symbol "\theta" (theta) is a letter from the Greek alphabet, commonly used in mathematics and science. In mathematics, it often represents an angle in geometry and trigonometry, where it can denote the measure of an angle in degrees or radians. In addition to its use in geometry, "\theta" appears in various scientific fields, such as physics and engineering, where it may represent variables like temperature or phase angles. It is also used in statistics to denote parameters in probability distributions, making it a versatile symbol in both theoretical and applied contexts.