计算题:175º16′30″-47º30′÷6+4º12′50″×3

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计算题:175º16′30″-47º30′÷6+4º12′50″×3
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计算题:175º16′30″-47º30′÷6+4º12′50″×3
计算题:175º16′30″-47º30′÷6+4º12′50″×3

计算题:175º16′30″-47º30′÷6+4º12′50″×3
175º16′30″-47º30′÷6+4º12′50″×3
=175º16′30″-7º55′+12º38′30″
=180º