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If sin alpha, cos alpha are the roots of...

If `sin alpha, cos alpha` are the roots of the equation `ax^2 + bx + c = 0 (c ne 0)`, then prove that `(a+c)^2 = b^2 + c^2`.

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Knowledge Check

  • If alpha and beta are thr roots of the equation ax^(2) + bx + c = 0 then ( alpha + beta )^(2) is ……… .

    A
    `(-b^(2))/(a^(2))`
    B
    `(c^(2))/(a^(2))`
    C
    `(b^(2))/(a^(2))`
    D
    `(bc)/(a)`
  • If -i + 2 is one root of the equation ax^2 - bx + c = 0 , then the other root is …………

    A
    `-i - 2`
    B
    `i - 2`
    C
    `2 + i`
    D
    `2i + i`
  • If alpha" and "beta are the roots of the equation ax^(2)+bx+c=0, (c ne 0) , then the equation whose roots are (1)/(a alpha +b)" and "(1)/(a beta +b) is

    A
    `acx^(2)-bx+1=0`
    B
    `x^(2)-acx+bc+1=0`
    C
    `acx^(2)+bx-1=0`
    D
    `x^(2)+acx-bc+11=0`
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