Kąt \(\alpha \) jest ostry i \(\cos \alpha =\frac{5}{13}\). Wtedy
A.\( \sin \alpha =\frac{12}{13} \) oraz \(\operatorname{tg} \alpha =\frac{12}{5}\)
B.\( \sin \alpha =\frac{12}{13} \) oraz \(\operatorname{tg} \alpha =\frac{5}{12}\)
C.\( \sin \alpha =\frac{12}{5} \) oraz \(\operatorname{tg} \alpha =\frac{12}{13}\)
D.\( \sin \alpha =\frac{5}{12} \) oraz \(\operatorname{tg} \alpha =\frac{12}{13}\)