By using properties of right triangles and trigonometric functions, we conclude that the length of the side BC is 19 units.
How to find the length of a side in a system of three triangles
In this problem we can use trigonometric functions to determine the length of the side BC in three steps:
Step 1
BE = AB/tan 60°
BE = 19√2 /4
Step 2
BD = BE/cos 45°
BD = 19/2
Step 3
BC = BD/sin 30°
BC = 19
To learn more on trigonometric functions: https://brainly.com/question/6904750
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