1.

A rocket lifted off from a launch pad and traveled vertically 30 kilometers, then traveled 40 kilometers at 30^(@) from the verical, and then traveled 100 kilometers at 45^(@) from the vertical, as shown in the figure below. At that point, the rocket was how many kilometers above the height of the launched pad?

Answer»

100
170
190
`30 + 20sqrt(3) + 50sqrt(2)`

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