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Q:

यदि cos θ = $$ {1\over \sqrt{10} }  $$ है, tan θ तो बराबर है ?

  • 1
    $$ {1\over \sqrt{3} } $$
  • 2
    $$ {1\over 3 } $$
  • 3
    $$ {\sqrt{3} } $$
  • 4
    3
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Answer : 4. " 3"

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