Use Pythagoras' theorem to find the 3rd side
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The answer depends on the labels of the sides which are 19 and 12.
The side opposite the angle 19 degrees is given by 15sin 19 = 4.9 units, while the side adjacent the angle 19 degrees is given by 15cos 19 = 14.2 units. So answer = 4.9 units, 14.2 units.
Each leg is the square root of 180.5 which is about 13.435 rounded to 3 decimal places
19
The width is 228/12 = 19 feet