Mathematics
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    arccos((sin33sin23.5-sin5.68)÷cos33cos23.5)
    2×99.73÷15
    arccos(-tan30tan16.32)
    arccos(-tan30tan16.32)
    arccos(-tan30tan-0.415997)
    arccos(-tan30tan16.32)
    arccos(-tan30tan(-0.415997))
    -tan30tan(-0.415997)
    23.5sin(-44)
    23.5sin-44
    -tan30tan16.32
    arccos(-tan30tan16.32)
    -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)=

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