1. The problem asks to convert 90 degrees into radians. 2. The formula to convert degrees to radians is $$\text{radians} = \text{degrees} \times \frac{\pi}{180}$$. 3. Applying the formula: $$90 \times \frac{\pi}{180}$$. 4. Simplify the fraction: $$\frac{90}{180} = \frac{\cancel{90}}{\cancel{180}} = \frac{1}{2}$$. 5. So, $$90 \text{ degrees} = \frac{1}{2} \pi = \frac{\pi}{2} \text{ radians}$$. 6. Therefore, 90 degrees is equal to $$\frac{\pi}{2}$$ radians.