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cot^(-1)((-1)/(sqrt(3))) का मुख्य मान ज...

`cot^(-1)((-1)/(sqrt(3)))` का मुख्य मान ज्ञात कीजिए ।

A

`(2pi)/(3)`

B

`(-2pi)/(3)`

C

`(5pi)/(3)`

D

`(4pi)/(3)`

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The correct Answer is:
A
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