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References to 'definitions in trigonometry'
1. $C_3$-category by bci1
2. addition formula by pahio
3. analytic continuation of Riemann zeta (using integral) by rspuzio
4. angle between two lines by pahio
5. angle multiplication and division formulae for tangent by rspuzio
6. application of fundamental theorem of integral calculus by pahio
7. calculator trigonometric functions by Wkbj79
8. Cartesian closed category by CWoo
9. circular helix by rspuzio
10. concavity of sine function by rspuzio
11. connection by rspuzio
12. convexity of tangent function by rspuzio
13. convolution by PrimeFan
14. cosine at multiples of straight angle by pahio
15. CR submanifold by jirka
16. cyclometric functions by pahio
17. derivation of 2D reflection matrix by stevecheng
18. derivation of second formula for surface integration with respect to area by rspuzio
19. derivation of the generating series for the Stirling numbers of the second kind by cgibbard
20. derivative of exponential function by rspuzio
21. derivatives of sine and cosine by Wkbj79
22. determination of Fourier coefficients by pahio
23. determining signs of trigonometric functions by Wkbj79
24. double angle identity by Wkbj79
25. eigenvalue problem by archibal
26. elementary function by pahio
27. errors can cancel each other out by pahio
28. even and odd functions by yark
29. example of divided difference interpolaton by rspuzio
30. examples of infinite products by mathcam
31. examples of periodic functions by pahio
32. exponential function by CWoo
33. Fourier coefficients by mathcam
34. Fourier sine and cosine series by pahio
35. geometric derivation of addition formulas for sine and cosine by rm50
36. goniometric formulas by Wkbj79
37. groupoid and group representations related to quantum symmetries by bci1
38. harmonic oscillator by perucho
39. Henri Poincar\'e by Daume
40. Hessian and inflexion points by rspuzio
41. high school mathematics by matte
42. higher order derivatives of sine and cosine by pahio
43. Hodge star operator by rspuzio
44. hyperbolic angle by CWoo
45. hyperbolic functions by mathwizard
46. hyperbolic identities by Wkbj79
47. index of special functions by rspuzio
48. index of tables by PrimeFan
49. inflection points and canonical forms of non-singular cubic curves by rspuzio
50. inflexion point by pahio
51. integration of rational function of sine and cosine by pahio
52. intersection divisor for a quartic by alozano
53. Jacobi $\vartheta$ functions by rspuzio
54. Laplace transform of cosine and sine by pahio
55. Levi flat by jirka
56. Lipschitz condition and differentiability by Mathprof
57. logarithm by rmilson
58. logarithmic derivative by rspuzio
59. logarithmic scale by pahio
60. mathematics vocabulary by matte
61. matrix exponential by mathcam
62. mean-value theorem by mathwizard
63. Mercator projection by acastaldo
64. Monte Carlo simulation by stevecheng
65. motion of continuum by perucho
66. Newtonian coalgebra by mps
67. Niemytzki plane by PrimeFan
68. nowhere differentiable by gel
69. order of contact by rspuzio
70. Parseval equality by asteroid
71. period of mapping by bwebste
72. periodic extension by CWoo
73. periodic functions by pahio
74. Plancherel's theorem by stevecheng
75. Pollard's $p - 1$ algorithm by PrimeFan
76. proof of angle sum identities by rspuzio
77. proof of Riemann mapping theorem by rspuzio
78. property of infinite simple group by Algeboy
79. Prosthaphaeresis formulas by mathfanatic
80. quasiperiod and half quasiperiod relations for Jacobi $\vartheta$ functions by rspuzio
81. rational sine and cosine by pahio
82. rectifiable set by paolini
83. rigorous definition of tangent function by rspuzio
84. rigorous definition of trigonometric functions by CWoo
85. saddle point approximation by msihl
86. score function by CWoo
87. slope by pahio
88. sohcahtoa by Wkbj79
89. stable manifold theorem by jarino
90. sum and product and quotient of functions by pahio
91. Taylor series by stevecheng
92. topic entry on complex analysis by pahio
93. topics on calculus by alozano
94. trigonometric equations by pahio
95. trigonometric formulas from series by pahio
96. trigonometry by rm50