Where is the number line?
Answer:
False
Step-by-step explanation:
This statement is false
{0}=ø
The first parts {0} says there is a zero in the set
The second item says it is an empty set
Answer:

Step-by-step explanation:
The trigonometric form of complex numbers is when the complex number is in polar form.
This is given by

where the modulus r is given by



and the argument is given by



The trigonometric form then becomes:

Answer:
Yes by SAS
Step-by-step explanation:
if you do 42 / 18 you see that the relationship between the sides is 2.3333... so that is one proportional side
Then, you see that there is one angle in both triangles that is 76 degrees, so that is one equal angle
then, you can do 21 / 9 = 2.33333... which is the same as the first proportion which means that is another proportional side.
then you have a side, angle, and a side, so it's SAS