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If a, b, c are in AP, then (a - c)^(2) e...

If a, b, c are in AP, then `(a - c)^(2)` equals

A

`4(b^(2) - ac)`

B

`4(b^(2) + ac)`

C

`4b^(2) - ac`

D

`b^(2) - 4ac`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • If angles A,B and C are in AP, then (a+c)/(b) is equal to

    A
    `2 sin ((A-C)/(2))`
    B
    `2 cos ((A-C)/(2))`
    C
    `cos ((A-C)/(2))`
    D
    `sin ((A-C)/(2))`

  • If a, b, c, d, e, f are in A.P. then e - c is equal to

    A
    `2(c - a)`
    B
    `2(d - c)`
    C
    `2(f - d)`
    D
    `(d - c)`

  • If a, b, c, d, e, f are in A.P., then e – c is equal to

    A
    2(c – a)
    B
    2(d – c)
    C
    2(f – d)
    D
    (d – c)

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