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4-43.

Wet World has an 18-foot-long water slide. The angle of elevation of the slide (the angle it forms with a horizontal line) is $50°$. At the end of the slide, there is a 6-foot drop into a pool. After you climb the ladder to the top of the slide, how many feet above the water level are you? Draw a diagram. Homework Help ✎

Imagine the slide as the hypotenuse of a right triangle. If you pretend, at first, that it's sitting on the ground,
the slide and the 'ground' form a 50° angle. Draw the diagram. Label all the parts you know. Add the 6' drop.
Where are you standing in the diagram?