Since DE β₯ AB
β ABC = β DEC
Also,
β ACB = β DE
Thus, by AA Similarity
Ξ ABC ~ Ξ DECSince sides are proportional in similar triangles
π΄π΅/π·πΈ = π΅πΆ/πΆπΈ
π/π=(π + π)/π
ππ/(π + π)=π₯
π=ππ/(π + π)
So, the correct answer is (b)
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