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°