Answer:
{7,14}
Step-by-step explanation:
Domain is always the X= Values
This makes no sense in sorry.
Answer:

Step-by-step explanation:
Let the third side of the triangle be
.
We can apply the cosine rule to find
.

We evaluate to obtain;



We take the positive square root of both sides to obtain;

The correct answer is B.
What are you trying to find? For example the x intercepts? y intercepts? vertex form? etc.