Question

Can someone please help me find the value of x to this equation

Answer 1

This is a right-triangle problem.

We will use the SOHCAHTOA principle.

In this triangle, we will relate the opposite side and the hypotenuse side to get the value of x. That will be the CAH relationship.

`\begin{gathered} \cos \theta=(adjacent)/(hypotenuse) \\ \cos \theta=(5)/(18) \\ \cos \theta=0.27778 \\ \theta=\cos ^(-1)(0.27778) \\ \theta=73.872^o \\ \theta=73.87^o \end{gathered}`

The final answer is 73.87 degrees.