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मान ज्ञात कीजिए - `cot^(-1)(-sqrt(3))`

Answer» मान `cot^(-1)(-sqrt(3))=theta , pi//2 lt theta lt pi`
`implies cot theta=-sqrt(3)=cot""(5pi)/(6)implies theta =(5pi)/(6)`
` :. cot^(-1)(-sqrt(3)) "का मुख्य मान "=(5pi)/(6)`


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