Step-by-step explanation:
the angle is greater than 180 degrees so it makes it an obtuse triangle
Two angles are said to be supplementary if their sum is 180 degrees. So, if x and y are supplementary angles, the formula is

We know that one of the angles (say x) is 98. So, the equation updates to

If we want to solve for the other angle, we can simply subtract 98 from both sides to get

.=1, any figure after . is o
so, 31/100
Answer:
x = 19
Step-by-step explanation:
2x - 10 = 28
2x = 38
x = 19
Best of Luck!