First, we are given that the inscribed angle of arc CB which is angle D is equal to 65°. This is half of the measure of the arc which is equal to the measure of the central angle, ∠O. 
 
    m∠O = 2 (65°) = 130°
Also, the measure of the angles where the tangent lines and the radii meet are equal to 90°. The sum of the measures of the angle of a quadrilateral ACOB is equal to 360°. 
     m∠O + m∠C + m∠B + m∠A = 360°
Substituting the known values,
     130° + 90° + 90° + m∠A = 360°
The value of m∠A is equal to 50°.
<em>Answer: 50°</em>
        
             
        
        
        
<span>I had the same question on my quiz
The answer is that The number could be 3 or any integer less than 3.</span>
        
                    
             
        
        
        
1. Vertex E is the center of the circle, A and B are on the circle.
2. Any angle with these properties (i. E is center, AE and AB are radii) is called a central angle.
3. Check the picture. 
4. An important property of these angles is that the measure of the arc AB = m(AEB)
 
        
        
        
11, rosabell had 11 posters for the parade
        
             
        
        
        
First option because 3 x 10^9 is 3,000,000,000