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msingh

  • one year ago

prove that the length of the perpendicular from the origin to the straight line joining the two points having coordinates ( a cos alpha, a sin alpha) and (a cos beta, a sin beta) is a cos { ( alpha + beta)/2}.

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  1. sauravshakya
    • one year ago
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    First find equation of the line passing through ( a cos alpha, a sin alpha) and (a cos beta, a sin beta)

  2. msingh
    • one year ago
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    vat after that

  3. shamim
    • one year ago
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    may i know ur calculated eqution for those 2 given points\[(a \cos \alpha , a \sin \alpha) , (a \cos \beta ,a \sin \beta)\]

  4. msingh
    • one year ago
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    (y - asinα)=[(asinβ-asinα)/(acosβ-acosα)]*(x-acosα)

  5. shamim
    • one year ago
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    did u solve ur problem

  6. shamim
    • one year ago
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    if u need more help then plz ask

  7. msingh
    • one year ago
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    yes i need help

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