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129 meter from the foot of a cliff on level of ground, the angle of elevation of the top of cliff is 30 °. The height of this cliff is
5Q:
129 meter from the foot of a cliff on level of ground, the angle of elevation of the top of cliff is 30 °. The height of this cliff is
- 143√3 metretrue
- 247 √3 metrefalse
- 350 √3 metrefalse
- 445 √3 metrefalse
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