Given $$\theta_1 + \theta_2 = \frac{\pi}{2}$$ and $$\theta_1 = \frac{1}{2}$$, find the value of $$\theta_2$$.

A

$$\frac{\pi}{4}$$

B

$$\frac{\pi}{2}$$

C

$$\frac{\pi}{3}$$

D

$$\pi$$