2×㏒（0.5，√2）
    2×6
    67-(-75)-33
    -105.772907tan200
    -52.151626tan240.1
    17.35388tan(360-79.8)
    86.113697tan(360-39.7)
    -52.282332*tan119.8
    19.003821tan72.5+50
    74.977374tan9.9+50
    21.353835tan99.9+50
    -91.86tan159.8
    100cos160
    100sin160
    sin160
    tan158.9*-91.86
    50/(tan159.9- tan10.1)
    50/(tan159.8- tan10)
    tan159.8
    50/(tan(159.8)-tan(100))

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