Предмет: Алгебра, автор: KristinaSokol99

sin^2+ 2cos^2/ sin^2- cos^2 ,
при tg=2
ОЧЕНЬ СРОЧНО!!

Ответы

Автор ответа: rima134
2
  sin^2+2cos^2/(sin^2-cos^2)=cos^2(sin^2/cos^2+2)/cos^2(sin^2/cos^2-1)=
  tg^2+2/tg^2-1=2+2/2-1=4
 будешь писать срочно -решать не буду я не ученик
 
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