A tangent ST to a circle touches it at B.AB is a chord such that ∠ABT=65°.Find ∠AOB, where "O"is the centre of the circle.

A tangent ST to a circle touches it at B.AB is a chord such that $∠ A B T = 65^{°}$ .Find $∠ A O B$ , where "O"is the centre of the circle.

Matching exercise

Match the items on the right to the items on the left.

Step 1

Step 2

Step 3

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