Odpowiedź:
a² + b² = c²
a² = c² - b² = 17² - 4² = 289 - 16 = 273
a = [tex]\sqrt{273}[/tex]
sin [tex]\beta = \frac{4}{17}[/tex]
cos [tex]\beta = \frac{\sqrt{273} }{17}[/tex] tg [tex]\beta = \frac{4}{\sqrt{273} } = \frac{4\sqrt{273} }{273}[/tex] [tex]ctg \beta = \frac{\sqrt{273} }{4}[/tex]
Szczegółowe wyjaśnienie:
