UPSKILL MATH PLUS

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A tangent \(ST\) to a circle touches it at \(B\). \(AB\) is a chord such that \(\angle ABT = 65^\circ\). Find \(\angle AOB\), where “\(O\)” is the centre of the circle.
 
Answer:
 
\(\angle AOB\) \(=\) \(^\circ\)