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12-109.

A -foot redwood tree is leaning  off vertical. How long will its shadow be when the angle the sunlight makes with the ground is ?

Draw a diagram to help you picture the problem.

Triangle, labeled as follows: left side, 125 feet, bottom left angle, 90 minus 20, degrees, bottom right angle, 68 degrees.

                        shadow

Use the Law of Sines to solve this problem.