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an observer on the ground is x meters from the base of the launch pad of a rocket, which is at the same level as the observer. a few seconds
after the rocket takes off vertically, the observer sees its tip at an angle of from the horizontal. how far above the ground is the tip of the
rocket at that instant? assume that the ground is level.
tang
b.
x
sing
• c xtan
d. xsin a
excos 4
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