The angles of a cyclic quadrilateral PQRS are ∠P=3x+20∘, ∠Q=4x+10∘, ∠R=4y−30∘ and ∠S=2y. Then value of (x−y) is
PQRS is a cyclic quadrilateral ∠P=3x,∠Q=y,∠R=x,∠S=5y. Find x and y.
If ABCD is a cyclic quadrilateral and ∠A=4y+20o;∠B=3y−5o;∠C=−4x,∠D=−7x+5o, then find the value of x and y.