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The angle of elevation of the top of a tower height 50 m from a point 50√3 m from the foot of the tower on a horizontal plane? |
30° 60° 45° 80° |
30° |
AB = height of tower Θ is angle of elevation tan Θ AB : BC 50 : 50 \(\sqrt {3}\) 1 : \(\sqrt {3}\) ⇒ Θ = 30° |
