Question

please solve this question, the 5 question.please​

Answer 1

Answer:

it's Avery hard questions

Answer 2

Answer:

given quadratic equation ax²+bx+c=0

let one root = p = sin α

second root = q = cos α

i) sum of the roots = -b/a

p+q = - b/a

sin α+cos α = -b/a ---(1)

ii) pq = c/a

sin α cosα = c/a---(2)

do the square of (1)

sin² α +cos² α + 2 sin αcosα = b²/a²  

1+2(c/a) = b²/a²  from sin²α+cos²α =1 and (2)

multiply each term with a²

a² +2ac = b²

hope this helps