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Q:

यदि tan  $$ -{7π\over4}=x $$ है , तो x का मान क्या है ? 

  • 1
    $$-{1\over2}$$
  • 2
    $$-{√3\over2}$$
  • 3
    $${√3\over2}$$
  • 4
    1
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Answer : 4. "1"

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