Предмет: Геометрия, автор: Вероника1004

дано: треугольник  АВС, а=20,в=13, альфа=67
найти: с,гамма, бета 

Ответы

Автор ответа: Аноним
0
с=√20²+13²-2*20*13-сos(76)=√569-520*cos76≈21см

B=37°
Y=76°
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8 A dentist is
f. someone who examines teeth
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g. someone who studies the human mind and behaviour
10 A psychologist is
h. someone who flies an aircraft
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