Mathematics

Mathematics

Problem

In figure, O is the centre of a circle, AB is a chord and AT is the tangent at A. If ∠AOB=100∘\angle AOB = 100^\circ, then ∠BAT\angle BAT is equal to ![Diagram showing a circle with center O. AB is a chord. AT is a tangent line at point A. The angle AOB is the central angle subtended by the chord AB.](https://storage.googleapis.com/diraq-contents/homework-question-parsing/marker/20260106T182719Z/bf3f7b6a868849eb832b99e1c5b502d3/935eed7aa61f7777f62cfc032e11bee9_img.jpg) (a) 100∘100^\circ (b) 40∘40^\circ (c) 50∘50^\circ (d) 90∘90^\circ

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