To convert degrees to radians, use the formula:

$\text{Radians} = \text{Degrees} \times \frac{\pi}{180}$

For 210 degrees:

$210^\circ \times \frac{\pi}{180} = \frac{210\pi}{180} = \frac{7\pi}{6}$

So, 210 degrees is equal to $\frac{7\pi}{6}$ radians.

Would you like more details or have any questions?

Here are 5 related questions for practice:

1. Convert 120 degrees to radians.
2. Convert 315 degrees to radians.
3. What is $\frac{2\pi}{3}$ radians in degrees?
4. Find the radian measure for 45 degrees.
5. Convert $-150^\circ$ to radians.

Tip: When converting degrees to radians, multiplying by $\frac{\pi}{180}$ simplifies the process!