2(43°16′-18.5°)等于

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2(43°16′-18.5°)等于
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2(43°16′-18.5°)等于
2(43°16′-18.5°)等于

2(43°16′-18.5°)等于
2(43°16′-18.5°)
=2×﹙43°16′-18°30′﹚
=2×﹙24°46′﹚
=48°92′
=49°32′

2(43°16′-18.5°)
=86°32′-37°
=123°32′

2(43°16′-18.5°)
=2(42°76′-18°30′)
=2*24°46′
=48°92′
=49°32′