Предмет: Алгебра, автор: naduha1911

Найдите неизвестные стороны и острые
Найдите неизвестные стороны и острые углы прямоугольного треугольника по следующим данным:
по двум катетам:
б)а=9,b=10;
Напишите что откуда взялось,пожалуйста

Ответы

Автор ответа: Аноним

0

c^2=a^2+b^2=81+100=181,c=√181
sin<A=9/√181,<A=arcsin9/√181
cos<B=9/√181,<B=arccos9/√181

Автор ответа: DVim

0

по теореме пифагора
С^2=A^2+b^2

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