Two poles, AB of length a metres and CD of length a + b (b … a) metres are erected at the same horizontal level with bases at B and D. If BD = x and tan…ACB = …, then :

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JEE Main 2021 · 27 Aug, Evening shift · Q3926

MathematicsMedium38×since 2004Q3926

Two poles, AB of length a metres and CD of length a + b (b

\ne

a) metres are erected at the same horizontal level with bases at B and D. If BD = x and tan

\angle

ACB =

{1 \over 2}

, then :