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473

Q:

यदि a cot θ + b cosec θ= p और b cot θ + a cosec θ = q है तो p-q2_____ के बराबर है

  • 1

    b2 – a2

  • 2

    a2 – b2

  • 3

    b – a

  • 4

    a2+b2

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Answer : 1. "

b2 – a2

"

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