The following table shows the relation between the angles x and y.
`{:(x,90^(@),100^(@),110^(@),120^(@),130^(@),140^(@)),(y,90^(@),80^(@),70^(@),60^(@),50^(@),40^(@)):}`
Then which of the following is true?

The following table shows the relation between the angles x and y. {:(X,90^(@),100^(@),110^(@),120^(@),130^(@),140^(@)),(Y,90^(@),80^(@),70^(@),60^(@),50^(@),40^(@)):} Express the relation between x and y with x as the subject.

If x+y=90^(@) , which of the following must be true?

Which of the folllowing cannot be the angles of a quadrilateral ? 70^(@),80^(@),90^(@),120^(@) (ii) 102^(@),88^(@),92^(@),78^(@) (iii) 80^(@),85^(@),90^(@),78^(@)

Which of the following groups of angle can be the angles of a quadrilateral? (i) 120^(@),90^(@),75^(@),30^(@) (ii) 100^(@),100^(@),70^(@),90^(@)

Q.if x=sin130^(@)cos80^(@),y=sin80^(@)cos130^(@)=1+xy, which one of the following is true

If x = sin 130^(@) cos 80^(@), y = sin 80^(@) cos 130^(@), z = 1+xy , which one of the following is true ?

If x = sin 130^(@) cos 80^(@), y = sin 80^(@) cos 130^(@), z = 1+xy , which one of the following is true ?

If x = sin 130^(@) cos 80^(@), y = sin 80^(@) cos 130^(@), z = 1+xy , which one of the following is true ?

Is it possible to form a triangle with angles of the following measures ? (i) 25^(@), 65^(@), 90^(@) (ii) 50^(@), 120^(@), 30^(@) (iii) 130^(@), 40^(@), 10^(@) (iv) 70^(@), 70^(@), 50^(@) (v) 30^(@), 90^(@), 90^(@) (vi) 60^(@), 50^(@), 60^(@)