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