trigonometry. • the branch of mathematics that deals with triangles. and their sides and angles. • the study of the relationships between. the sides and angles of triangles, and.
trigonometry is a very common branch of mathematics the word trigonometry means measurement of side of a triangle this branch of mathematics can be used to find the angle of a triangle knowing its side or to find the ratio of side of triangle knowing its angle
fact
angle equals to Arc / radius its unit is radian
Radian equals to 180 degree
sin, cos ,tan, cot, sec , cosec 6 trigonometric ratio
each ratio is written by its first small English later
