Вычислите: cos(-60°) + sin² 45°

cos(-60°) = cos(60°) = $$\frac{1}{2}$$

sin² 45° = $$(\frac{\sqrt{2}}{2})^2 = \frac{2}{4} = \frac{1}{2}$$

cos(-60°) + sin² 45° = $$\frac{1}{2} + \frac{1}{2} = 1$$.