sin 60°/sin r=320/280=1.143
sin r=sin60°/1.143= 0.7577
r=49.26°//.Pls I don't know how they get this; 0.7577 and also the final answer which is r=49.26°.Pls explain if you know thanks.?
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Asked by Lapkang Hygenus on 7th February, 2020
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