A wooden plank is leaning against a wall.

The bottom of the plank is 4 feet from the wall.

AUsing the Sine ratio, find AC, the approximate length of the plank.

Round to the nearest tenth of a foot. (10 points)

BUsing the Tangent ratio, find BC, the height off the ground where the plank touches the wall.

Round to the nearest tenth of a foot. (10 points)