PQRS is a cyclic quadrilateral such that PR is a diameter of the circle. If ∠QPR=67° and ∠SPR=72°, then ∠QRS=

Given that,

PQRS is a cyclic quadrilateral


∠QPR =67°


∠SPR = 72°


∠SPQ = ∠QPR + ∠SPR


= 67o + 72o


= 139°


∠SPQ + ∠QRS = 180° (Opposite angles of cyclic quadrilateral)


139o + ∠QRS = 180°


∠QRS = 41°

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