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642

Q:

यदि a(tanθ+cotθ)=1, sinθ+cosθ=b और 0°<θ<90°,  है तो a और b के बीच सम्बंध होगा।

  • 1
    $$ {2a={b^2}}+1$$
  • 2
    $$ {b^2=2({a-1}})$$
  • 3
    $$ {2a={b^2-1}}$$
  • 4
    $$ {b^2=2({a+1}})$$
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Answer : 3. "$$ {2a={b^2-1}}$$"

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