Find the Exact Value sin(30 degrees )-cos(45 degrees )

$\sin (30 °) - \cos (45 °)$

The exact value of $\sin (30 °)$ is $\frac{1}{2}$ .

$\frac{1}{2} - \cos (45 °)$

The exact value of $\cos (45 °)$ is $\frac{\sqrt{2}}{2}$ .

$\frac{1}{2} - \frac{\sqrt{2}}{2}$

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{2} - \frac{\sqrt{2}}{2}$

Decimal Form:

$- 0.20710678 \dots$