Answer:
Do u have English version?
Step-by-step explanation:
 
        
             
        
        
        
Answer: Id say B
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant.  But maybe you don't know it isn't and it's a "trick" to throw you off.  Hmm... 
Anyways, the half angle identity for tangent is

There are actually 3 identities for the tangent of a half angle, but this one works just as well as either of the others do, so I'm going with this one.  
If theta is in QIII, the value of -4 goes along the x axis and the hypotenuse is 5.  That makes the missing side, by Pythagorean's Theorem, -3.  Filling in our formula:
 which simplifies a bit to
 which simplifies a bit to
 and a bit more to
  and a bit more to

Bring up the lower fraction and flip it to divide to get
 which of course simplifies to
 which of course simplifies to 
-3.  Choice A.
 
        
             
        
        
        
Answer:
 or 1.5
 or 1.5
Step-by-step explanation:
Now we know it's a dilation.  So we can use any two points.  I chose V and V'.
V: (3,6)
V': (2,4)
So how we get from 6 to 4?

You can tell it's 1.5 aswell because 4 times 1 is 4 and 4 times 0.5 is 2.  Add them to get 6.  
Therefore, the dilation factor is 1.5.