There's no slope, so it's impossible to answer your question. I'm sorry.
Answer:
16.9265381881
Step-by-step explanation:
Tangent = Opposite/Adjacent.
Thus, tan62 = x/9 --> tan62 = 1.88072646535, multiply by 9 to get x, 1.88072646535* 9 = 16.9265381881
Answer: 
Step-by-step explanation:
Find the x-coordinate of the vertex with this formula:

In this case:

Substituting values, we get:
Now we can substitute the coordinates of the vertex into the equation
and then solve for "c".
Then:
