4. Find the value of x in each diagram. The lines AB and BO are tangents. b. a. B 68°

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A: We can find the dot product using the given data in the below steps.

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A: Topic:- vector algebra

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A: We will use property of cyclic quadrilateral.

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A: Given:The figure.To Find:The values of  and .The values of  and .

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A: Answer is given in next step.

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A: Solution:-

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