Basic Formulas. Reciprocal Identities. Trigonometry Table. Periodic Identities. Co-function Identities. Sum and Difference Identities. Double Angle Identities. Triple Angle Identities. Half Angle Identities. Product Identities. Sum to Product Identities. Inverse Trigonometry Formulas. Basic Trigonometric Function Formulas. The calculation is simply one side of a right angled triangle divided by another side we just have to know which sides, and that is where "sohcahtoa" helps. For a triangle with an angle θ , the functions are calculated this way: Example: what are the sine, cosine and tangent of 30° ? This page explains the sine, cosine, tangent ratio, gives on an overview of their range of values and provides practice problems on identifying the sides that are opposite and adjacent to a given angle. The Sine, Cosine and Tangent functions express the ratios of sides of a right triangle. Trigonometry. Outline. History. Usage. Functions ( inverse) Generalized trigonometry. Reference. Identities. Exact constants. Tables. Unit circle. Laws and theorems. Sines. Cosines. Tangents. Cotangents. Pythagorean theorem. Calculus. Trigonometric substitution. Integrals ( inverse functions) Derivatives. v. t. e. Vay Nhanh Fast Money.

sin cos tan laws