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2. Glossary of mathematical symbols - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

3. Trigonometric functions - Wikipedia

   en.wikipedia.org/wiki/Trigonometric_functions

   Basis of trigonometry: if two right triangles have equal acute angles, they are similar, so their corresponding side lengths are proportional.. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

4. CRC Standard Mathematical Tables - Wikipedia

   en.wikipedia.org/wiki/CRC_Standard_Mathematical...

   CRC Standard Mathematical Tables (also CRC Standard Mathematical Tables and Formulas or SMTF) is a comprehensive one-volume handbook containing a fundamental working knowledge of mathematics and tables of formulas.

5. Trigonometric tables - Wikipedia

   en.wikipedia.org/wiki/Trigonometric_tables

   A simple recurrence formula to generate trigonometric tables is based on Euler's formula and the relation: (+) = This leads to the following recurrence to compute trigonometric values s n and c n as above: c 0 = 1 s 0 = 0 c n+1 = w r c n − w i s n s n+1 = w i c n + w r s n

6. Csc-1 - Wikipedia

   en.wikipedia.org/wiki/Csc-1

   Csc-1, CSC-1, csc-1, or csc −1 may refer to: csc x−1 = csc(x)−1 = excsc(x) or excosecant of x, an old trigonometric function; csc −1 y = csc −1 (y), sometimes interpreted as arccsc(y) or arccosecant of y, the compositional inverse of the trigonometric function cosecant (see below for ambiguity)

7. Proofs of trigonometric identities - Wikipedia

   en.wikipedia.org/wiki/Proofs_of_trigonometric...

   Illustration of the sum formula. Draw a horizontal line (the x -axis); mark an origin O. Draw a line from O at an angle α {\displaystyle \alpha } above the horizontal line and a second line at an angle β {\displaystyle \beta } above that; the angle between the second line and the x -axis is α + β . {\displaystyle \alpha +\beta .}