From the image, it looks like you're working on converting angles between radians and degrees.

Let's break down each part of the problem:

1. Given conversion for 60°:

   • $60^\circ = \frac{\pi}{3}$ radians.
   • This is a known conversion. The relationship between degrees and radians is: $\text{radians} = \text{degrees} \times \frac{\pi}{180}$

2. Next step, converting $\frac{2\pi}{3}$ radians to degrees:

   • To convert radians to degrees, use: $\text{degrees} = \text{radians} \times \frac{180}{\pi}$ $\frac{2\pi}{3} \times \frac{180}{\pi} = 120^\circ$ So, $\frac{2\pi}{3}$ radians equals $120^\circ$, which matches the provided answer.

3. Final question, converting $\frac{3\pi}{4}$ radians to degrees:

   • Applying the same formula: $\frac{3\pi}{4} \times \frac{180}{\pi} = 135^\circ$ So, $\frac{3\pi}{4}$ radians equals $135^\circ$.

Would you like more details or have any other questions?

Here are five related questions to consider:

1. How do you convert degrees to radians?
2. What is the general formula for converting between degrees and radians?
3. Can you convert $90^\circ$ to radians?
4. What is the radian measure of a full circle (360°)?
5. How would you convert $\frac{\pi}{2}$ radians into degrees?

Tip: Always remember the conversion factor $\pi \text{ radians} = 180^\circ$ to switch between degrees and radians.