It seems like you are working on a math or geometry problem involving angles, but the information provided is not entirely clear. Could you provide more context or clarify what you're asking?
For example, if you are looking to find the value of angle \( b \) in a triangle where one angle is given as 120° and another as 50°, we can calculate it.
Here is how you can calculate angle \( b \):
- In a triangle, the sum of all angles equals 180°.
- If we let angle \( a = 120° \) and angle \( c = 50° \), then we can find angle \( b \) using the formula: \[ b = 180° - a - c \]
- Plugging in the values: \[ b = 180° - 120° - 50° = 10° \]
Thus, \( b = 10° \).
If this is not what you meant, please provide more details or the specific question you're trying to solve!