If `ABCD` is a cyclic quadrilateral in which `angle A=(x+y+10)^@, angle B=(y+30)^@, angle C=(x-y-20)^@` and `angle D=(x+y)^@.` Find `x and y.`

In a cyclic quadrilateral ABCD, it is given : angleA=(x+y+10)^(@), angleB=(y+20)^(@), angleC=(x+y-30)^(@)" and "angleD=(x+y)^(@) . Find angleB .

If ABCD is a cyclic quadrilateral in which /_A=(x+y+10)^(@),/_B=(y+30)^(@),/_C=(x-y-20)^(@) and /_D=(x+y)^(@). Find x and y.

If ABCD be a cyclic quadrilateral in which angleA = 4x^@ , angleB = 7x^@ , angleC = 5y^@ & angleD = y^@ , then x, y is___

The angles of a cyclic quadrilateral ABCD are angleA=(6x+10)^(@), angleB=(5x)^(@), angle C =(x+y)^(@) and angle D = (3y-10)^(@) .

The angles of a cyclic quadrilateral ABCD are angleA=(6x+10)^(@), angleB=(5x)^(@), angle C =(x+y)^(@) and angle D = (3y-10)^(@) .

If ABCD be a cyclic quadrilateral in which angle A = 4x^@, angle B = 7x^@, angle C= 5y^@, angle D = y^@ , then x: y is यदि ABCD एक चक्रिय चतुर्भुज हो जिसमें angle A = 4x^@, angle B = 7x^@, angle C= 5y^@, angle D = y^@ , तो x: y कितना होगा ।

In a cyclic quadrilateral ABCD, it is being given that angle A = (x + y + 10)^(@), angle B = ( y + 20 ) ^(@), angle C = (x + y - 30 ) ^(@) and angle D = (x + y ) ^(@) . Then, angle B ?