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Q:

यदि θ धनात्मक न्यूनकोण हो और 5 cosθ + 12 sinθ = 13 हो, तो cosθ का मान ज्ञात कीजिए ?

  • 1
    $${12\over13}$$
  • 2
    $${5\over13}$$
  • 3
    $${5\over13}$$
  • 4
    $${1\over5}$$
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Answer : 2. " $${5\over13}$$"

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