Если \[\sin \alpha =\frac{1}{2},\] то: \[\cos \alpha = \frac{1}{2}, tg=\sqrt{3}\] \[\cos \alpha = \frac{\sqrt{3}}{2}, tg=\frac{\sqrt{3}}{3}\] \[\cos \alpha = \frac{\sqrt{2}}{2}, tg=1\]

Задание

Если

\[\sin \alpha =\frac{1}{2},\]

то:

\[\cos \alpha = \frac{1}{2}, tg=\sqrt{3}\]
\[\cos \alpha = \frac{\sqrt{3}}{2}, tg=\frac{\sqrt{3}}{3}\]
\[\cos \alpha = \frac{\sqrt{2}}{2}, tg=1\]