Question

If sin alpha and cos alpha are the roots of the equations ax^2 + bx + c, then b^2 =

Answer 1

Answer:

sin alpha×cos alpha =c/a

(sin alpha + cos alpha ) squre = b2/ a2

sin2 alpha+ cos alpha+2sin alpha ×cos

alpha=b2/a2

1+2 c/a =b2/a2

(a+2c)/a=b2/a2

a2+2ac=b2