How does Beta (greek leter) relate to math and/or science?
Math and science frequently use Greek letters. Most people are familiar with pi representing the ratio of a circle’s circumference to diameter. It is used in other contexts too (pi networks in electrical engineering for example) and the other 23 Greek letters likewise have a variety of uses. Beta is used in many different contexts, from the previously mentioned beta function, to transistor gains, to angles in geometry, etc. The upper and lower case letters of the Latin alphabet just aren’t enough, even with subscripts of letters and numbers. So characters from other alphabets are also used, Greek being the other one used the most.