Mathematics
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    -tan30tan16.32
    23.5sin44
    23.5sin(-44)
    23.5sin-44
    23.5sin44
    23.5sin44
    0.375*5/13*16*39/25
    sin(arctan4+arctan0.25)=
    arccos0.105162
    (sin29.71sin23.5-sin5.68)÷cos29.71cos23.5
    arccos((sin29.71sin23.5-sin5.68)÷cos29.71cos23.5)
    arccos((sin29.71×sin23.5-sin5.68)÷cos29.71cos23.5)
    arcsin(sin23.5×sin5.68+cos23.5×cos5.68×cos60)
    23.5×sin(14)
    23.5×sin(-14)
    arcsin(sin23.5×sin5.5+cos23.5×cos5.5×cos60)
    14/15*38/39/(39/15*14/39)
    arcsin(sin23.5×sin5.5+cos23.5×cos5.5×cos60)
    sin60
    sin90

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