jee-main 2015 Q90

jee-main · India · 10apr Sine and Cosine Rules Heights and distances / angle of elevation problem

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are $30^\circ$, $45^\circ$ and $60^\circ$ respectively, then the ratio $AB : BC$, is:
(1) $\sqrt{3} : 1$
(2) $\sqrt{3} : \sqrt{2}$
(3) $1 : \sqrt{3}$
(4) $2 : 3$

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are $30^\circ$, $45^\circ$ and $60^\circ$ respectively, then the ratio $AB : BC$, is:\\
(1) $\sqrt{3} : 1$\\
(2) $\sqrt{3} : \sqrt{2}$\\
(3) $1 : \sqrt{3}$\\
(4) $2 : 3$

Paper Questions

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