All you need to do is pull out the common factor of 

:
 
 
        
        
        
Answer:
Sine of A should be 5/13
Step-by-step explanation:
Hope this Helped
 
        
             
        
        
        
Option B:

Solution:
In the given figure  .
.
If two triangles are similar, then their corresponding sides and angles are equal.
By CPCTC, in  ,
,
 – – – – (1)
 – – – – (1)
 – – – – (2)
 – – – – (2)
 – – – – (3)
 – – – – (3)
 – – – – (4)
  – – – – (4)
 – – – – (5)
  – – – – (5)
 – – – – (6)
  – – – – (6)
Option A: 
By CPCTC proved in equation (2)  .
.
Therefore  . Option A is false.
. Option A is false.
Option B: 
By CPCTC proved in equation (1)  .
.
Therefore Option B is true.
Option C: 
By CPCTC proved in equation (4)  .
.
Therefore  . Option C is false.
. Option C is false.
Option D: 
By CPCTC proved in equation (5)  .
.
Therefore  . Option D is false.
. Option D is false.
Hence Option B is the correct answer.

 
        
             
        
        
        
Step-by-step explanation:
if b+c=0
b=-c
x^b=x^-c
so
1/[2(x^b)+1]
 
        
             
        
        
        
The graph below represents y < 2 over 3x − 2 | <span>y > 2x + 2</span> system of inequalities. The answer is letter C. The rest of the choices do not answer teh qustion above