Предмет: Алгебра, автор: D1sa25

#331 (tga+ctga)/(tga-ctga) ecли tga =(3/2)

Ответы

Автор ответа: kolesnik80

1

Если tga =3/2, то ctgа=2/3.
Тогда
(tga+ctga)/(tga-ctga)= подставим значения
(3/2 +2/3)/(3/2 -2/3)= выполним действия
(9/6 +4/6)/(9/6 -4/6)=
(13/6)/(5/6)=
13/5=
2,6.

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