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In the given figure, O is the centre of a circle, BOA is its diameter and the tangent at the point P meets BA extended at T.

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In the given figure, O is the centre of a circle, BOA is its diameter and the tangent at the point P meets BA extended at T. If ∠PBO = 30° then ∠PTA =?

(a) 60° (b) 30° (c) 15° (d) 45°

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(b) 30°

We know that a chord passing through the center is the diameter of the circle

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