Wiki Trig Identities Math
Trigonometry from greek trigōnon triangle and metron measure is a branch of mathematics that studies relationships between side lengths and angles of triangles.
Wiki trig identities math. Reciprocal identities. For the following let x be any positive whole number. Trigonometric identities are equalities involving trigonometric functions. List of trigonometric identities math wiki.
They are widely used in all sciences that are related to geometry such as navigation solid mechanics celestial mechanics geodesy and many others. In order to prove trigonometric identities we generally use other known identities such as pythagorean identities. The field emerged in the hellenistic world during the 3rd century bc from applications of geometry to astronomical studies. An example of a trigonometric identity is sin 2 theta cos 2 theta 1.
Sin2 θ cos2 θ 1. The following identities follow a similar form to a b c. Given two functions f and g we say f g if f x g x for all every x in the domain of both f and g. Add new page.
Search this wiki this wiki all wikis sign in don t have an account. In mathematics the trigonometric functions also called circular functions angle functions or goniometric functions are real functions which relate an angle of a right angled triangle to ratios of two side lengths.