Question

in a fig o is the centre and ​

Answer 1

Please refer to the attachment and give your feedback.

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Answer 2

OP=OB....(radii of same circle)

angle OPB=angle OBP=45°....(angles opposite to same side are equal)

angle OPB+angleOBP+angle PQB=180...(angle sum property)

45°+45°+anglePQB=180

angle PQB=180-90

angle PQB=90°

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