Mathematics
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    csc30sin19.3775
    sin19.3775csc30
    cos49.3775
    csc20
    csc50
    csc30
    csc30
    sin19.3775csc30
    sin30
    csc30
    sin49.3775
    sin30
    sin79.755
    sin79.6
    sin79
    120÷3.6
    tan(arccos0.77)
    tan(arccos0.63)－tan(arccos0.92)
    tan(arccos0.77)－tan(arccos0.92)
    6×2/3

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