Предмет: Алгебра, автор: NataliCollins

Кто разбирается в тригонометрии, помогите

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Автор ответа: 1w2a3l4e5r6i

0

tg(arctg1/3+arctg1/9)= 1/3+1/9=4/9
sin(2arctg3)-cos(2arctg2)=6-4=2
sin(arcsin1/2+arccos1/2)= 1/2+1/2=1

Автор ответа: NataliCollins

0

разве можно так складывать?

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