(sin45° tg60°+ cos45° ctg30°)² - cos60°.

\( (\sin45° \cdot \tan60° + \cos45° \cdot \cot30°)^2 - \cos60° \) равно \( (\frac{1}{\sqrt{2}} \cdot \sqrt{3} + \frac{1}{\sqrt{2}} \cdot \sqrt{3})^2 - \frac{1}{2} \).