Question

Which trigonometric ratio should you use to find X

Answer 1

Tan, since you only have the two smaller sides

Answer 2

We need to figure out which trig function we can use when we can one angle, its adjacent side, and its opposite side

sin(x) = opposite/hypotenuse
cos(x) = adjacent/hypotenuse
tan(x) = opposite/adjacent

So we know we have to use C: tangent

Hope this helps<span />