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मान ज्ञात कीजिए - ` "cosec"^(-1)(-2)` |
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Answer» मान `"cosec"^(-1)(-2)=theta , -pi//2 le theta lt 0 (theta lt 0)` `implies "cosec"theta =-2 implies "cosec" theta="cosec"(-(pi)/(6))` `implies theta=-(pi)/(6)` `:. "cosec"^(-1)(-2) "का मुख्य मान "=-(pi)/(6)` |
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