A flagpole at right angle to the horizontal is located on a slope that makes an angle of $12^\circ$ with the horizontal. The pole's shadow is 16 meters long and points directly down the slope. The angle of elevation from the tip of the shadow to the sun is $20^\circ$. The height of the pole is meters.
Hint: Draw a triangle and apply the Law of Sines. Note that the shadow points down the slope starting from the bottom of the flag pole. The angle of elevation is the angle made with the horizontal (not with the ground).