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If the equation sin(cot^(-1)(cot^(-1)(ta...

If the equation `sin(cot^(-1)(cot^(-1)(tan^(-1))))=lambda` has a solution, then `lambda` lies in the interval a.`(0,1]` b. `[1/(sqrt(2)),1]` c. `[1/(sqrt(2)),1/(sqrt(2))]` d. `(-oo,1]`

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