Question 2

$ \cos \theta = \frac {Adjacent}{Hypotenuse} $

$ \cos 70^\circ = \frac{x}{50 - x} $

$ \cos 70^\circ (50 - x) = x $

$ x = \frac{50 (\cos 70^\circ )}{1 + \cos 70^\circ} $

Hence, $ x = 12.5 $