$cot\, x + cot\, (60^\circ + x) + cot\, (120^\circ + x)$ ની કિંમત કોના બરાબર છે?

  • A
    $cot\, 3x$
  • B
    $tan\, 3x$
  • C
    $3\, cot\, 3x$
  • D
    $3\, tan\, 3x$

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