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Yahoo! Group Title

if the angles A ,B ,C of a triangle are in AP and if a,b,c denotes the lenght of the side opposite to A, B , C respectively then the value of the expression a/c *sin2C + C/a * Sin2A is ?

  • one year ago
  • one year ago

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  1. hartnn Group Title
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    A+B+C=180 A+C=2B B=.... ?

    • one year ago
  2. Yahoo! Group Title
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    B=60

    • one year ago
  3. shubhamsrg Group Title
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    how about hit and trial.. assume the angles are 60,60,60 so final ans becomes sqrt3 ! :P please confirm..

    • one year ago
  4. Yahoo! Group Title
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    Yes..)

    • one year ago
  5. Yahoo! Group Title
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    but i did nt get u..)

    • one year ago
  6. hartnn Group Title
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    from sine rule, c/a =... ? then c/a *(2sin A cos A )= .. ?

    • one year ago
  7. Yahoo! Group Title
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    Ha...Silly...i got it..:)

    • one year ago
  8. hartnn Group Title
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    wasn't it easy ? ;)

    • one year ago
  9. RadEn Group Title
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    what means AP ?

    • one year ago
  10. hartnn Group Title
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    Arithmetic Progression if, a,b,c are in AP, then 2b=a+c

    • one year ago
  11. RadEn Group Title
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    actually, if a,b,c in AP then the triangle have sides 3x, 4x, 5x. it means the right triangle. right ?

    • one year ago
  12. hartnn Group Title
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    how did u come up with sides 3x, 4x, 5x ? and angels are in AP, not sides....

    • one year ago
  13. RadEn Group Title
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    OPSS... i look ur coment before hartnn :)

    • one year ago
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