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Student Support Forum > General > > "Solving trig equation, solution set contains dups"

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Please answer this:2+7 =



Original Message (ID '554427') By Bill:
Hi: Try this: Solve[{2 Sin[x]^2 + 3 Sin[x] + 1 == 0, 0 < x < 2 \[Pi]}, x] // DeleteDuplicates Regards, Bill