A pole is \( 100 \sqrt{3} \) metres high. Find the value of a if the angle of elevation of its t...

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A pole is \( 100 \sqrt{3} \) metres high. Find the value of a if the angle of elevation of its top from a point \( 100 \mathrm{~m} \) away from its foot is \( (10 \mathrm{a})^{\circ} \).
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