Question

what is x? how would i find the value of x?

Answer 1

We will use the definition of the cosine function of an angle as follows:

$cos(x)=\frac{adjacentside}{hypothenuse}=\frac{2}{5.7}$

Now, let's solve the latter equation for "x" using the inverse cosine:

$\cos^{-1}(\frac{2}{5.7})=x$

The answer is: x=69