Question

PQ is a tangent drawn from an external point to a circle with Centre o. q o r is the diameter of a circle if angle pqr is equal to 120 degree what is the measure of angle o p q

Answer 1

how can be angle PQR is equal to 120° . Because according to your question angle PQR is made by tangent but a tangent to a circle is perpendicular to the radius at the point of contact . So angle PQR is 90° and may be angle QOR IS 120° . If this is given in the question then OPQ  is 30°

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