Mathematics
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    90-arctan2-arctan0.5
    90-arctan2-arctan0.5
    180+arctan(0.47*7.5)-90-arctan(7.5)-arctan(0.038*7.5)
    180+arctan(0.47*7.5)-90-arctan(7.5)-arctan(0.034*7.5)
    180+arctan(0.47*7.5)-90-arctan(7.5)-arctan(0.038*7.5)
    180+arctan(0.47*7.5)-90-arctan(7.5)-arctan(0.034*7.5)
    250*0.75
    tan(arccos0.8)
    sqrt(1200*1200+563*563)
    1200/0.65
    1200*1.16913
    1200*0.684808
    1.16913-0.484322
    tan0.451027
    tan0.863212
    tan15
    arctan0.36
    arctan0.25
    arctan0.5
    tan26.31

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