A coal bed with an attitude of N68°E, 40°S is exposed near the bottom of a hill. One adit is to be driven westward along the bottom of the bed from the east side of the hill, and a second adit is to be driven eastward along the bottom of the bed from the west side of the hill. To facilitate drainage of water, as well as the ease of movement of full ore carts out of the mine, each adit is to have a slope of 10°. Determine the bearing of each of the two adits.