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. 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. Laws and theorems. Sines. Cosines. Tangents. Cotangents. Pythagorean theorem. Calculus. Trigonometric substitution. Integrals ( inverse functions) Derivatives. v. t. e. In mathematics, sine and cosine are trigonometric functions of an angle. 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° ? The main functions in trigonometry are Sine, Cosine and Tangent. They are simply one side of a right-angled triangle divided by another. For any angle " θ ": (Sine, Cosine and Tangent are often abbreviated to sin, cos and tan.)
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.
Introduction to the trigonometric ratios. Trigonometric ratios in right triangles. Learn how to find the sine, cosine, and tangent of angles in right triangles. The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan).
For right-angled triangles, the ratio between any two sides is always the same and is given as the trigonometry ratios, cos, sin, and tan. Trigonometry can also help find some missing triangular information, e.g., the sine rule.
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    • sin cos tan laws