11. The Deflection angle δ of a plumb line from the true vertical (radial line) at latitude λ is approximately (all angles are represented in radians)
(A) ω²R_E(sin λ)/g
(B) ω²R_E(cos λ)/g
(C) ω²R_E(sin 2λ)/2g
(D) ω²R_E(cos 3λ)/2g
(E) none of the above.

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