Answer:
D = { -4,-2,1,4}
Step-by-step explanation:
The domain is the inputs to the function
D = { -4,-2,1,4}
Draw a right triangle.


Arctangent (tan^-1) can be used to find theta.

Answer:
7.62
Step-by-step explanation:
We can draw another point at (-3, -4) named C to get a right-angled triangle.
AC = 2 (by counting)
BC = 7 (by counting)
Using Pythagoras Theorem,




(nearest hundredth)