The term 'Branch of Math' can be summarized by two crossword solutions: TRIG (4 letters) and ALGEBRA (7 letters). Trigonometry is a branch of mathematics that studies relationships between angles and sides of triangles. It is used in many fields, such as engineering, navigation, and surveying. ALGEBRA is a branch of mathematics that deals with the manipulation of symbols and the solving of equations. It is used to solve problems in many areas, such as physics, economics, and finance.