Mathematics
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    1.57-arcsin0.75-3.14+arctan√7
    arcsin0.75
    arctan√7
    9/6
    1/2×1.25×〖34.95〗^2×0.9×0.1
    1/2×1.25×〖34.95〗^2×2.05×0.45
    1/2×1.25×〖34.95〗^2×2.05×0.2
    1.35×25.89
    1.00×1.0×1.11×23/1.00
    1.02×(18.5/10)^0.16×23
    2880*1.2
    4*1.5-0.5*2*1.5^2
    arctan(-78/298)
    arctan(-298/78)
    arctan(298/78)
    arccos0.866
    arctan(28/16
    arctan(53.4/30
    arctan(14/7.5
    arctan(84/165)

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