Question

How do I find X Trigonometry?

Answer 1

18.41

Explanation:

We want to solve for x (adjacent) with given measurement and hypotenuse. Set up the equation of cosine:

`\displaystyle{\cos 64^(\circ) = (x)/(42)}`

We know that cosine is adjacent to hypotenuse so that's how we set up the equation above. Then solve for x:

`\displaystyle{42\cos 64^(\circ) = x}\\\\\displaystyle{18.41=x}`

Therefore, x = 18.41