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At a point on a horizontal …

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At a point on a horizontal line through the base of a monument the angle of elevation of the top of the monument is found to be such that its tangent is1/2 . On walking 138 metres towards the monument the secant of the angle elevation is found to be √193/12 . The height of the monument (in metre) is: (A) 35. (B)49. (C)42. (D)56

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CBSE > Class 10 > Mathematics

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