Mathematics

Mathematics

Problem

In the given figure, ∠ABD=70∘\angle ABD = 70^\circ, ∠ADB=30∘\angle ADB = 30^\circ. Then, ∠BCD\angle BCD is ______. ![](https://storage.googleapis.com/diraq-contents/homework-question-parsing/marker/20260106T182719Z/4b427138d990475fa4104329d548684b/30a26f2d17ca95672702bf50fb4f0242_img.jpg) (A) 90∘90^\circ (B) 80∘80^\circ (C) 100∘100^\circ (D) 120∘120^\circ

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