Yes, they can add up to 180 degrees. Say one angle is 65 degrees, and the other one is 115 degrees. That would equal to 180 degrees.
Hope this helps.
Answer:

Step-by-step explanation:
Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.
B =
= 
Answer:10 cents
Step-by-step explanation:you said that the bat cost dollar,so it means that the ball have to cost ten cents
Answer:
The 2nd one
Step-by-step explanation: