Answer: a = 122*
The three angles added together form a circle or 360*.
Set a + b + c = 360 and solve for a
a + 66 + 172 = 360
Subtract 238 from both sides to get a
a = 122*
Answer:
Hope this image helps you. (sorry if it's tiny writing.)
Step-by-step explanation:
It's 96%
816/850 = 0.96, which is 96%
Hope I helped! ( Smiles )
Do you have to show ur work?