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[" 16.If "sin2 theta=k" ,then the value ...

[" 16.If "sin2 theta=k" ,then the value of "(tan^(3)theta)/(1+tan^(2)theta)+(cot^(3)theta)/(1+cot^(2)theta)=],[[" 1) "(1-k^(2))/(k)," 2) "(2-k^(2))/(k)," 3) "k^(2)+1]]

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