How do you find v° and x using sine, cosine, and tangent?

In the smaller triangle:

cos v° = adjacent/hypotenuse
           = 4.5/10
v°= cos^-1(4.5/10)
   = 63.25°

sin v° = opposite/hypotenuse
sin 63.25° = x/10
x = 10(sin 63.25°)
   =8.93