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Two pillars of height a and b subtend the same angle alpha at a point on the line joining their feet. If the pillars subtend angles beta and gamma at another point in the horizontal plane at which the line joining their feet subtends a right angle then, |
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Answer» `(a+b) cot^(2)ALPHA = a^(2)cot^(2)BETA + b^(2)cot^(2)GAMMA` |
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