英语数学题
Averticalflagpole,18mhigh,standsonhorizontalground.calculatetheangleofelevationofthet...
A vertical flagpole,18 m high ,stands on horizontal ground .calculate the angle of elevation of the top of the flagpole from a point ,on the ground 25 m from its base .(是35.18 度还是36.73度)
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