section_heading: Sinus, kosinus i tangens višestrukih kutova
paragraph_text: <math>\operatorname{tg}\,(n{+}1)\theta = \frac{\operatorname{tg} n\theta + \operatorname{tg} \theta}{1 - \operatorname{tg} n\theta\,\operatorname{tg} \theta}.</math>