What is the scale factor of the dilation?

divide by 2

Step-by-step explanation:

to go to 12 to 6 , you will have to divide by 2

12/2 = 6

12 and 6 are on the same side in both triangles , that is why I used those two numbers to figure out the scale factor

The value of sin (20°) will always be positive, because :

0° < 20° < 90°

we know, that 20° lies in first quadrant and values of sin in first quadrant is always positive.