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\frac { \operatorname { cot } \theta } { \operatorname { cosec } \theta + 1 } + \frac { \operatorname { cosec } \theta + 1 } { \operatorname { cot } \theta } = 2 \operatorname { sec } \theta |
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Answer» cota/(csca + 1) + (csca + 1)/cota =(csca - 1)/(csca - 1) * cota/(csca + 1) + (csca + 1)/cota =(csca cota - cota)/(csc^2a - 1) + (csca + 1)/cota =(csca cota - cota)/cot^2a + (csca + 1)/cota =(csca - 1)/cota + (csca + 1)/cota =2csca/cota =(2/sina)/(cosa/sina) =2/cosa =2seca |
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