Inscribed angle "V" and whose sides pass through points "A" and "B". Draw line "OA". Angle "BOA" is a central angle; call it "θ". Lines "OV" and "OA" are both radii of the circle, so they have equal lengths. Therefore, triangle "VOA" is isosceles, so angle "BVA" (the inscribed angle) and angle "VAO" are equal; let each of them be denoted as "ψ". Angles "BOA" and "AOV" are supplementary. They add up to 180°, since line "VB" passing through "O" is a straight line. Therefore, angle "AOV" measures 180° − "θ". It is known that the three angles of a triangle add
How Are Things in Glocca Morra? How Are Things in Glocca Morra? "How Are Things in Glocca Morra?" is a popular song about a fictional village in Ireland, with themes of nostalgia and homesickness. It was introduced by Ella Logan in the original Broadway production of "Finian's Rainbow". The music was composed by Burton Lane and the lyrics were written by E.Y. Harburg. The song was published in 1946 and introduced in the 1947 musical "Finian's Rainbow". There is no actual Glocca Morra in Ireland (though there is a Glockamara). In a television interview late in his life, Harburg revealed that the name "Glocca Morra" was