A statue on the top of a pillar, standing on level ground, is found to subtend the greatest angl...

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A statue on the top of a pillar, standing on level ground, is found to subtend the greatest angle \( \alpha \) at the eye of an observer when his distance from the pillar is \( \mathrm{cm} \); prove that the height of the statue is \( 2 c \) \( \tan \alpha \mathrm{m} \); and find the height of the pillar.
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