Quiz (1 point)
Given that:
    
    
∠ABC is a right angle
    
    Prove that:
The following properties may be helpful:
    - m∠ABC = m∠CBA
- if ∠ABC is a right angle, then sine of (m∠BAC) = (distance CB) / (distance CA)
- if m∠BAC = m∠CAB, then sine of (m∠BAC) = sine of (m∠CAB)
- if the following are true: - a = b
- a = c
 - then b = c 
Please write your proof in the table below. Each row should contain one claim. The last claim is the statement that you are trying to prove.