Question

Hi thank you so for all your time and help in advance

Answer 1

Question:

Solution:

Remember the following definition :

$\cos (x)=\frac{adjacent\text{ side to the angle x }}{hypotenuse}$

thus, if:

$\cos (x)=\frac{adjacent\text{ side to the angle x }}{hypotenuse}=\frac{\sqrt[]{3}}{2}$

then, according to the given triangles in the problem, the only angle that fulfills this, is:

$x=30$

so that, the correct answer is:

$x=30$