41. Talk : Trigonometric functions # Check my work. 42. Gyrotrigonometry takes the approach of using the ordinary trigonometric functions but in conjunction with gyrotriangle identities. 43. Where and are the trigonometric functions tangent. 44. Using right triangles and the concept of similarity, the trigonometric functions sine and cosine can be defined. 45. Especially this property made them more interesting than the normal trigonometric functions which have only one period. 46. The values of trigonometric functions of angles related to 2 \ pi / 7 satisfy cubic equations. 47. He also defined the exponential function for complex numbers, and discovered its relation to the trigonometric functions . 48. For r = 4 an equivalent solution in terms of complex numbers instead of trigonometric functions is 49. An appropriate scaling of and using the trigonometric functions sine and cosine gives the rotated perpendicular component. 50. A prime example were trigonometric functions .
