Answer
A) The top box is opposite, the second box down adjacent, the third one down is hypotenuse.
B) $\sin=\frac{opposite}{hypotenuse}$,$\cos=\frac{adjacent}{hypotenuse}$,$\tan=\frac{opposite}{adjacent}$
Work Step by Step
A) The side directly across from theta is the opposite, the side right next to theta is the adjacent, and the hypotenuse is the slanted side (diagonal).
B) The functions can be remembered by the acronym, "SOH-CAH-TOA."
Sin = hyp/opp, Cos = adj/hyp, Tan = opp/adj
