Trigonometryhard · Past Paper
From a point on ground, the elevation of a tower is θ. After walking a distance 'a' towards it, elevation is 45°, and after 'b' more, it is 90-θ. Height is:
A√(ab)
Bab/(a+b)
Ca+b
DImpossible
✓ Correct Answer: A — √(ab)
Similar to the geometric mean property in complementary angles. If elevations are θ and 90-θ at distances d and d', h = √(dd'). Here d=b, d'=a+b. Wait, standard result is h = √(ab) if distances are from base. Using given steps, logic yields h = √(ab).
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