Respuesta :
We know that a supplementary angle is equal to 180. Since we have one angle, we can easily find the other angle.
180 - 128.9 = 51.1
The other angle is equal to 51.1 degrees
180 - 128.9 = 51.1
The other angle is equal to 51.1 degrees
Supplementary angle= 180°
180° -128.9° = 51.1°
The final answer is 51.1°~
180° -128.9° = 51.1°
The final answer is 51.1°~