Если \(\sin\alpha=\frac{1}{2},\) то:

• \(\cos\alpha=\frac{\sqrt{3}}{2}, \tg\alpha=\frac{\sqrt{3}}{3}\)
• \(\cos\alpha=\frac{1}{2}, \tg\alpha=\sqrt{3}\)
• \(\cos\alpha=\frac{\sqrt{2}}{2}, \tg\alpha=1\)