1. The problem asks to convert 45 degrees into radians. 2. The formula to convert degrees to radians is: $$\text{radians} = \text{degrees} \times \frac{\pi}{180}$$ 3. Applying the formula: $$45 \times \frac{\pi}{180}$$ 4. Simplify the fraction: $$\frac{45}{180} = \frac{\cancel{45}^1}{\cancel{180}^4}$$ so the expression becomes $$\frac{\pi}{4}$$ 5. Therefore, 45 degrees is equal to $$\frac{\pi}{4}$$ radians.