If `sin alpha and cos alpha` are the roots of the equation `px^(2) +qx+r=0,` then which one of the following is correct ?

If sin alpha and cos alpha are roots of the equation px^(2)+qx+r=0 then :

If sin alpha and cos alpha are roots of the equation px^2 + qx+r=0 then :

If sin^(2)alpha , 3cos^(2)alpha are the roots of the equation 4x^(2)-3px+k=0 ,then which of the following is not true?

If one of the roots of the equation px^(2)+qx+r=0 is three times the other, then which one of the following relations is correct ?

If alpha , beta , gamma are the roots of the equation px^3 - qx + r = 0 , then the value of alpha + beta + gamma is

If the roots of ax^(2)+bx+c=0 " are " sin alpha and cos alpha " for some " alpha , then which one of the following is correct ?