Answer: Option A
[tex]\theta=tan^{-1}(\frac{8}{6})[/tex]
Step-by-step explanation:
We can model the situation by means of a right triangle.
Where the  angle [tex]\theta[/tex] is the angle that you make with the top of the TV.
Then the horizontal distance of 6 feet is the adjacent side and the vertical distance of 8 feet is the opposite side to the angle the.
By definition of the [tex]tan(\theta)[/tex] function we know that:
[tex]tan(\theta)=\frac{opposite}{adjacent}[/tex]
Therefore:
[tex]tan^{-1}(\frac{8}{6})=\theta[/tex]
[tex]\theta=tan^{-1}(\frac{8}{6})[/tex]
