реши номер 458

\(\sin\alpha=\frac45,\quad \tg\alpha=-\frac43,\quad \ctg\alpha=-\frac34.\)

\(\cos\alpha=-\frac{\sqrt{21}}5,\quad \tg\alpha=\frac{2\sqrt{21}}{21},\quad \ctg\alpha=\frac{\sqrt{21}}2.\)