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PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S suchthat QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?

PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S suchthat QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR? Correct Answer 90

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PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?
PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees) of POR?
PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?
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A circle whose radius is of 10 cm is having a chord inside it which is RS at a distance of 6 cm from it. It is having another chord PQ inside it which intersects chord PQ at T such that TS = 1/6 of RT. Find the value of chord PQ?
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