Ответ:
1. sin B = 3/4, tg B = 3, ctg B = 1/3
2. sin y = 0,2, cos y = 0,8
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Ответ:
1. sin B = 3/4, tg B = 3, ctg B = 1/3
2. sin y = 0,2, cos y = 0,8