Answer:

Explanation:
Given

See attachment
Required
Find 
To do this, we make use of the following theorem
--- angle at the center and angle between two tangents add up to 180 (i.e. they are supplementary angles)
So, we have:

Collect like terms


The area of square a is 100
The United States is an example of Democracy.
Answer:
Because there weren't enough big brains out there to cover all of the major things and that there we're major time periods of things.
Explanation: