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

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

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The correct Answer is:
`cot ((2pi)/(3)) = (1)/(sqrt(3))` अतः `cot^(-1) ((-1)/(sqrt(3)))` का मुख्य मान `(2pi)/(3)` है ।
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